About 10% of the current landmass of the Earth is made up of glaciers.
What are glaciers?A glacier is a huge mass of ice and snow that covers a considerable amount of the Earth's surface, which is made up of compacted layers of snow that have accumulated over many years, frequently centuries or even millennia. Glaciers are found in the world's coldest areas, including Greenland, Antarctica, and Alaska, but they may also be found in other mountain ranges throughout the world. Glaciers are a significant source of fresh water for many communities, as they can store water for extended periods of time. This freshwater source can help to meet the demands of cities and farms for drinking and irrigation, particularly in areas where water is scarce or unavailable.
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what does the cenozoic fossil record of north america reveal about how climate was changing over that era?
The Cenozoic fossil record of North America reveals that the climate was changing significantly over the era. During the Paleocene and Eocene, temperatures were generally warmer than today and the climate was relatively wet. As the Eocene transitioned into the Oligocene, temperatures began to cool.
By the end of the Miocene, temperatures began to cool again, resulting in the formation of glaciers in the northern part of the continent. This period of cooling and drying continued through the Pliocene and Pleistocene.
By the end of the Pleistocene, temperatures were much cooler and the climate was dry, resulting in the onset of the modern glacial age. These fluctuations in climate over the Cenozoic era reveal the dynamic nature of Earth’s climate system.
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escoge la respuesta correcta. how is the sky reflected at the salar de uyuni? the sun causes it to reflect all year long. a thin layer of water reflects it during the rainy season. the snow reflects it during the winter season. the salt reflects it all year long.
The sky is reflected at the Salar de Uyuni in various ways throughout the year. During the rainy season, a thin layer of water reflects the sky, creating a unique and beautiful landscape. In the winter, the snow reflects the sky, further adding to the breathtaking scenery. However, all year long the salt of the Salar reflects the sky, making it shimmer and sparkle in the sun's rays.
This reflection of the sky can be seen from afar and provides a mesmerizing effect as the sun's rays travel across the expanse of the Salar. In the mornings, the sky may be filled with wisps of clouds which are then mirrored in the reflective salt, giving the impression that one is standing on the edge of a large sea. During the evenings, the sky often holds a stunning array of colours, which are similarly reflected in the salt and create an amazing landscape.
The sky is constantly reflecting off the Salar de Uyuni and changing with the changing of the seasons. Whether it is the thin layer of water in the rainy season, the snow in the winter season, or the salt all year long, the reflections of the sky always create a breathtaking landscape that is sure to awe anyone who views it.
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evidence that supports a coastal migration to the americas comes from which source? (select as many as apply)
The source that provides DNA evidence supporting the idea of a coastal migration to the Americas is human fossils.
Studies of DNA extracted from ancient human remains have provided evidence for the coastal migration theory, which posits that the first humans to arrive in the Americas migrated along the Pacific coast of North and South America, rather than through an inland route.
Specifically, mitochondrial DNA studies of ancient human remains found in North and South America have shown genetic links between these populations and modern-day populations in Southeast Asia and the Pacific Islands, suggesting that the first Americans originated from these regions and migrated along the coastal route.
DNA evidence from plant and animal fossils can also provide information about past environments and migrations, but it is the analysis of ancient human DNA that has been most crucial in supporting the coastal migration theory.
The complete question is:
Which source provides DNA evidence supporting the idea of a coastal migration to the Americas? Is it plant fossils, human fossils, or animal fossils?
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what platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks? calcite micas feldspars quartz
The most visible platy, parallel, mineral grains in foliated metamorphic rocks are usually micas, followed by calcite, feldspars, and quartz. Micas have a distinct platy structure, making them easily visible. Calcite, feldspars, and quartz are also common, although not as distinct in appearance.
The platy, parallel, mineral grains that are the most visual aspect of foliated metamorphic rocks are micas. Metamorphic rocks are rocks that have undergone a metamorphic process. Heat, pressure, and chemical alteration are all examples of such alterations.
These changes are influenced by geological forces such as plate tectonics, magma intrusion, or mountain-building (orogeny) pressures. They are classified as metamorphic rocks if they exhibit substantial structural or mineralogical adjustments relative to their original state.
Some of the common metamorphic rocks are marble, slate, gneiss, schist, etc. Foliated metamorphic rocks, such as schist and gneiss, have a texture that results from the alignment of mineral grains due to extreme pressure and temperature.
Foliated metamorphic rocks have a parallel arrangement of minerals that gives them a platy or layered appearance. They can be distinguished from unfoliated rocks like quartzite and marble, which lack the layered structure seen in foliated metamorphic rocks. Micas are the most visible aspect of foliated metamorphic rocks.
The minerals in foliated metamorphic rocks tend to be flattened, and they appear as elongated flakes or scales. Micas are the most frequent minerals in foliated metamorphic rocks. They have a tendency to separate into thin, flexible sheets, resulting in a distinctively flaky appearance that is particularly prominent in schist.
Therefore, the platy, parallel, mineral grains that are the most visual aspect of foliated metamorphic rocks are micas.
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In the summer, snowfall decreases, and melting increases, which results in the outflow being meltwater, thus leading to an increase in ablation causing an overall __________ budget and glacier shrinkage.
In the summer, snowfall decreases, and melting increases, which results in the outflow being meltwater, thus leading to an increase in ablation causing an overall negative budget and glacier shrinkage.
What is Ablation?Ablation refers to the processes by which a glacier loses ice. The process of ablation is due to both melting and calving. In the context of the given question, the decrease in snowfall and increase in melting result in an increase in ablation, which causes an overall negative budget and glacier shrinkage.
Ablation can be performed for a variety of reasons, including to treat cancer, reduce the size of an organ, or relieve symptoms caused by certain conditions. For example, cardiac ablation is a common procedure used to treat abnormal heart rhythms by destroying small areas of heart tissue that are causing the irregular heartbeat.
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How can language be a unifying force between two places? (1 point)
O The creation of one official language can bring language speakers together culturally.
O A lingua franca can allow people from different places to communicate and share popular culture.
O Putting toponyms or official documents into one language can encourage people to speak the same language, bringing people
together.
O The development of a new dialect will often bridge cultural gaps and encourage trade between places
Which statement is true about jazz? (1 point)
O The main center of jazz moved from New York to California.
O Jazz was mainly influenced by ranchera.
O Radio led to the decrease in popularity of jazz.
O Radio enabled jazz to spread to a wider audience
Which statement best summarizes some of the ways that non-Christians have influenced European cultures? (1 por
O Non-Christians have influenced rituals practiced in European cultures.
O Non-Christians have changed the calendar so that Christian holidays are no longer celebrated.
O Non-Christians have not influenced European cultures.
O Non-Christians have influenced European cultures through music, food, and architecture
Identify a connection between food and religion in Asia. (1 point)
O Muslims are prohibited from eating pork, and Hindus are prohibited from eating beef.
O Asian religions require rice to be eaten at every meal as the main dish.
O All citizens in a country with a large Hindu population must avoid eating beef.
O Everyone must eat the same ritual foods at holidays regardless of what they believe
What is the religious significance of Jerusalem? (1 point)
O Jerusalem is the only important city to Muslims.
O Jerusalem is only important to Jews.
O Jerusalem is an important religious city to Jews, Christians, and Muslims.
O Jerusalem is an important city to Jews and Christians
How can citizens use population statistics to make smart, informed decisions about advertisements in media? (1 point)
O They can evaluate different population statistics to fact-check media sources.
O They can evaluate different population statistics to decide where to build a community center.
O They can evaluate different population statistics to determine the best target media for their product
O They can evaluate different population statistics to decide where to advertise a restaurant
Demographic transition models use what two population statistics to signify change in a nation's population? (1 point)
O birth rates and death rates
O geographic location and number of people below the poverty line
O education levels and income
O race and birth rates
Which is an example of how the dominant culture can create a negative effect on migration ion? (1 point)
O The dominant culture removes the language barrier in migration processes.
O The mixing of multiple cultures creates a diverse and inclusive society
O The dominant culture can create an identity crisis for migrants
O The dominant culture overwhelms the healthcare infrastructure
Which technique would be most useful in determining why migrants are coming to the Miami (City area of Miami, Florida?
(1 point)
O a case study
O national statistics
O experimental research
O quantitative research methods
Which environmental push factor has affected Micronesia? (1 point)
O earthquakes
O civil war
O rising sea levels
O drought
Which environmental push factor has affected Micronesia? (1 point)
O earthquakes
O civil war
O rising sea levels
O drought
Migration resulting from the recent instability in Northern Africa and the Middle East have created which of these outcomes?
(1 point)
O declining immigration to the U.S. creating job openings
O mass flows of refugees into Europe
O a generational depopulation of young people
O mass migration across the Atlantic Ocean to the U.S
Which pairing of push and pull factors is correct to immigration and emigration? (1 point)
O Push and pull factors create emigration.
O Pull factors create emigration.
O Push factors create emigration.
O Push factors create immigration
Which pairing of push and pull factors is correct to immigration and emigration? (1 point)
O Push and pull factors create emigration.
O Pull factors create emigration.
O Push factors create emigration.
O Push factors create immigration
Answer:
Being directly connected with thinking, language registers and fixes in words, and in words combined into sentences, the results of the process of thinking and achievements of man's cognitive activity, and thus makes possible the exchange of thoughts in human society.
Explanation:
Explain one spacial change in manufacturing employment patterns as a result of deindustrialization
Answer:
During deindustrialization, the declining share of employment in manufacturing appears to mirror a decline in the share of manufacturing value added in GDP. At first glance, this decline would suggest that domestic expenditure on manufactures has decreased while expenditure on services has increased.
water velocity in a stream varies based on many factors but is usually greater at the mouth than the head. which part of a stream commonly has the highest gradient?
Water velocity in a stream varies based on many factors but is usually greater at the mouth than the head. The part of a stream commonly having the highest gradient is head.
Stream is defined as a body of water, running or moving continuously in a channel or course of considerable width and length. There are a number of different types of streams, each characterized by its size, location, and water velocity.
Some of the important factors that affect water velocity in a stream include the slope of the land, the amount of water in the stream, the shape of the streambed, and the type of sediment in the streambed.
Water velocity is the speed of water in a stream or river. It is the distance the water travels over a particular period of time. Water velocity in a stream is influenced by many factors such as the streambed, the shape of the channel, the amount of water in the stream, and the slope of the land, among others.
Gradient refers to the steepness or slope of a stream channel. The highest gradient in a stream is found at the head. The head is the point where the stream begins or the location where the stream gets its water. As the stream flows downstream, the gradient decreases, and the water velocity decreases.
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what composition of lava will travel further group of answer choices basaltic rhyolitic andesitic dacitic
Basaltic lava is the most fluid type of lava and can therefore travel further than other types of lava. This is because basaltic lava is composed of lower viscosity magma that is able to flow over greater distances due to its lower density.
This type of lava is also the most common type of lava, which means it is the most likely to be found on Earth’s surface. Rhyolitic lava is more viscous than basaltic lava and therefore does not travel as far.
This is because rhyolitic lava is composed of higher silica and has a higher viscosity than basaltic lava. Andesitic lava is less viscous than rhyolitic lava, but more viscous than basaltic lava.
Andesitic lava is composed of minerals that create a mix of both low and high viscosity magma. Finally, dacitic lava is the least fluid type of lava and therefore has the shortest travel distance. This is because the minerals in dacitic lava create a high viscosity magma that is not able to flow as far as other types of lava.
In summary, basaltic lava is the most fluid type of lava and is therefore able to travel further than other types
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true or false: the northern hemisphere of mars experiences long cold winters. question 1 options: true false
The answer is True.
The northern hemisphere of Mars experiences long, cold winters due to the planet's axial tilt and its elliptical orbit around the sun. During Martian winter, the polar regions can experience temperatures as low as -195 °F (-125 °C).
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on the hazard city map, the blue feature running through riverside and ralston is a river system. which direction is the river system flowing through hazard city?
On the Hazard City map, the blue feature that runs through Riverside and Ralston is a river system. The direction the river system is flowing through Hazard City is southeast.
Hazard City is an interactive application that is utilized in disaster management training. It is a platform that helps train first responders and emergency managers to respond to both human-made and natural disasters. The application has various functions, which include:- Permitting users to explore a virtual city and discover possible hazards- Permitting users to choose the disaster and create a scenario- Permitting users to select the emergency response teams and resources- Permitting users to watch the scenario play out after setting it up.
The direction of the river system flowing through Hazard City is southeast. The blue feature on the map that runs through Riverside and Ralston is a river system. Hazard City is a virtual city, and the map represents different features in the virtual city. Therefore, the river system flowing through the virtual city is represented by the blue feature on the map.
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explain a parallel, meridian, latitude, and longitude, indicating where the zero value is for each measurement and identifying important lines of latitude.
Answer: You've seen lines running across maps your whole life and may not have noticed them. The lines running North to South are called "Meridians" or "lines of longitude" (Figure 2), while the lines running East to West are called "Parallels" or "lines of latitude" (Figure 3).
Explanation:
which type of cloud shows the greatest vertical growthwhich cloud type would be most likely to form in an unstable atmosphere?
The type of cloud that shows the greatest vertical growth and is most likely to form in an unstable atmosphere is a cumulonimbus cloud.
The cumulonimbus cloud is known for producing strong winds, thunder, lightning, and heavy rain or snow.
These clouds are tall and dense and can grow to heights of over 10,000 meters (32,808 feet). They are composed of water droplets and sometimes contain ice crystals, which form due to the rapid condensation and uplifting of air.
An unstable atmosphere is characterized by warm, moist air near the surface and cooler air at higher altitudes, creating conditions that promote upward air currents and vertical development of clouds.
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in general, what do beaches look like at the end of winter?
Winter – Higher winter waves move sand offshore and narrow the beach. … The summer beach is covered with a layer of sand that is moved south by the longshore currents and onshore by low waves. The winter beach is denuded of sand by high storm waves.
In general, beaches look different at the end of winter compared to the peak of summer. During winter, beaches are often deserted and quiet, with fewer visitors and tourists.
The weather is usually cooler, and the water is colder, making swimming and water sports less popular. Additionally, beaches may be covered in debris, seaweed, and other natural materials that have washed up during storms or high tides. The sand may also be covered in snow, depending on the region.
However, despite the cooler weather and fewer visitors, winter beaches can be a beautiful and peaceful place to visit. Many people enjoy long walks along the shoreline, watching the waves crash against the shore, and taking in the natural beauty of the coast.
In conclusion, beaches look different at the end of winter compared to the peak of summer. They are often quieter, colder, and covered in natural materials. Despite this, they can be a beautiful and peaceful place to visit during the off-season.
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the earthquake foci pattern east of australia and just north of new zealand indicates which tectonic setting?
The earthquake foci pattern east of Australia and just north of New Zealand indicate the convergent tectonic setting.
What is a convergent tectonic setting?
Convergent tectonic setting occurs when two tectonic plates move towards each other and eventually collide. The area of contact between the two plates is known as a subduction zone. Earthquakes occur frequently in this region because of the pressure generated by the colliding plates.
The collision of the Pacific plate with the Australian plate produces a tectonic activity in the region east of Australia and just north of New Zealand.
This activity leads to the subduction of the Pacific plate beneath the Australian plate, which causes an earthquake in the area.
Consequently, the earthquake foci pattern east of Australia and just north of New Zealand indicates the convergent tectonic setting.
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which source reflects the highest degree of authority on the subject of shale-oil deposits in north america?
The source that reflects the highest degree of authority on the subject of shale-oil deposits in North America would be a peer-reviewed scientific journal article written by a recognized expert in the field.
This type of source undergoes rigorous review by other experts in the field and is considered to be the most reliable and authoritative source of information. Additionally, scientific journals often require authors to disclose any potential conflicts of interest or funding sources, adding to their credibility. Other reliable sources of information on shale-oil deposits in North America could include government reports and studies, industry reports, and academic books written by recognized experts in the field.
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why was the great wall of china built where it was?
Answer:
It was built to protect territory.
Explanation:
The Great Wall of China was built over centuries by China's emperors to protect their territory. Today, it stretches for thousands of miles along China's historic northern border.
which of the following is true of high pressure areas? question 74 options: they generally involve atmospheric pressures lower than 1000 mb. air converges and ascends within high pressure systems. they are characteristic for areas along the equator. air descends and diverges within high pressure systems.
Air descends and diverges within high pressure systems is true of high pressure areas.
What are high pressure areas?A high-pressure area or anticyclone is a region where the atmospheric pressure at the surface of the planet is greater than its surrounding atmosphere. The divergence of air as a result of the increased pressure leads to clear skies and pleasant weather. A region of high pressure is also referred to as an anticyclone or high. The wind near the surface of the earth will flow away from the high-pressure region due to the rising motion.
In the high-pressure areas, the sinking motion of the air descends, leading to clear skies and pleasant weather. High-pressure regions have descending air currents that produce stable weather patterns. As the air descends, it heats up, causing the moisture to evaporate and leaving the sky free of clouds. As a result, high-pressure areas are usually associated with good weather. Areas of high pressure tend to be connected with clear, blue skies, as opposed to areas of low pressure, which tend to be linked with cloudy, rainy weather. Hence, the answer to the given question is option D, Air descends and diverges within high pressure systems.
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Imagine that local government is closing your favorite park because of budget cuts. Outline a plan of how you would use the media to try to stop this action. << Read Less
To try to stop the local government from closing my favorite park, I would develop a plan to use the media effectively.
Here's how I would go about it:
Identify key media outlets: Identify the key media outlets in the local area, such as local newspapers, radio stations, and television stations.
Develop a message: Develop a clear and concise message that explains why the park is important and why it should not be closed. The message should be easy to understand and should appeal to a broad audience.
Reach out to the media: Reach out to the media outlets identified in step one and pitch the story. Be sure to provide a copy of the message, as well as any supporting materials.
Organize a protest: Organize a protest to bring attention to the issue. Use social media platforms to advertise the protest, and encourage supporters to attend.
Stay on message: During interviews with the media, stay on message and focus on the key points. Be prepared to answer questions and provide additional information as needed.
Follow up: Follow up with the media outlets and continue to provide updates and additional information as the situation develops. Keep the public informed and engaged in the issue.
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what kind of climate is controlled by elevation more than any other factor? responses temperate continental temperate continental tropical wet tropical wet highland highland polar
The climate that is controlled by elevation more than any other factor is the highland climate.
What is the highland climate?
A highland climate is a climate that is found in high mountainous areas such as the Andes, the Himalayas, and the Rockies. Due to high altitudes, these regions experience cooler temperatures compared to surrounding lowlands, making it difficult for life to thrive.
The temperature, precipitation, and vegetation of highland areas vary depending on factors such as the altitude and slope orientation. Generally, temperatures decrease with altitude, and rainfall increases.
Highland climates usually experience heavy rainfall and fog, especially in the upper elevations. Due to the cold temperatures, vegetation is limited to alpine tundra and montane forests.
countries with highland climates include China, Mongolia, The United States, Nepal, Kazakhstan, Tajikistan, Kyrgyzstan, Tibet, Uganda, Kenya, Russia, Georgia, Italy, and Switzerland, among others.
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PLS HELP MEE the question is in the photo
Answer:
Explanation:
sorry i don't know it sorry
Equation for a circle that has a center of -6, 5 and passes through the point -11, 3
(x + 6)² + (y - 5)² = r²(-11 + 6)² + (3 - 5)² = r² (-5)² + (-2)² = r² 25 + 4 = r² 29 = r²
Answer: (x + 6)² + (y - 5)² = 29
which of the following would be most impacted by the coriolis effect? group of answer choices winds traveling eastward at the equator winds traveling eastward at 60 degrees south a soccer ball kicked during a game at the equator a soccer ball kicked during a game at 60 degrees south
Explanation:
Winds traveling eastward at 60 degrees south would be most impacted by the Coriolis effect. The Coriolis effect is the apparent deflection of moving objects (including winds) when viewed from a rotating reference frame (such as the Earth). The effect is strongest at the poles and decreases towards the equator. At the equator, the Coriolis effect is zero, while at 60 degrees south (a location in the Southern Hemisphere), the effect is quite significant. Therefore, the winds traveling eastward at 60 degrees south would experience a greater deflection due to the Coriolis effect compared to the other options listed. The soccer ball examples are not affected by the Coriolis effect since they are not large enough to experience the effect
the pacific coast of south america has many volcanic mountains and a narrow continental shelf. this is an example of .
The Pacific Coast of South America has many volcanic mountains and a narrow continental shelf, which is an example of a subduction zone. Subduction zones are a type of tectonic boundary where one tectonic plate is sliding underneath another.
It also leads to the formation of a narrow continental shelf due to the subduction of the plate. The oceanic plate is pushed down and causes the edge of the continent to drop, resulting in a shallow seafloor.
Subduction zones are an example of a convergent plate boundary, where two plates are moving towards each other. Subduction zones form a major part of the global tectonic cycle, helping to drive continental drift and mountain formation.
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where is light penetration in a river or stream likely to be lowest? a. the source b. the mouth c. the middle portion d. none of the above please select the best answer from the choices provided a b c d
Light penetration in a river or stream is likely to be lowest at the middle portion. The correct option is C.
This is because the middle portion of a river or stream is typically the deepest and has the most sediment, which can block out or reduce the amount of light that penetrates the water.
Additionally, the middle portion is often where the greatest amount of currents and turbulence occur, which can further reduce the amount of light that reaches the bottom of the river or stream.
As light penetration decreases, photosynthesis rates are lowered and the amount of oxygen available to the aquatic life in the river or stream is also reduced. The correct option is C.
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________ are comprised of members from different geographic areas assembled as needed to collaborate on a certain project.a) work groupsb) virtual teamsc) non-core teamsd) task forcese) command groups
Task Forces are comprised of members from different geographic areas assembled as needed to collaborate on a certain project. The answer is (d) task forces.
Task forces are temporary teams that are created to work on a specific project or problem. They are composed of individuals who have different skill sets and come from different geographic areas within an organization. Task forces can be established for a variety of purposes such as developing a new product, improving a process, or resolving a crisis. Once the task is completed, the team is dissolved.
The members of the task force return to their previous roles within the organization. Task forces are often used in organizations to leverage expertise from various parts of the organization and to ensure that critical issues are addressed in a timely and effective manner. They are a useful way to bring together diverse perspectives and talents to achieve a specific objective.
Therefore, the correct answer is (d) task forces.
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which element is found in greater amounts in low viscosity magma, than in high viscosity magma? question 12 options: a) si b) fe
Si (Silica) is found in greater amounts in low viscosity magma, than in high viscosity magma. Option A is correct answer.
High silica content magmas will consequently show higher levels of polymerization and have higher viscosities than magmas with low silica concentration. A substance's viscosity is a measurement of its consistency. A substance's viscosity is defined as its capacity to resist flow. Viscosity is, in some ways, the inverse of fluidity. Because cold molasses is less fluid than water, it has a greater viscosity.
The temperature, composition, and gas concentration of a magma all influence its viscosity. The relationship between temperature and viscosity is self-evident. The greater the temperature, like with most liquids, the more fluid the material becomes, reducing its viscosity.
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which of the following is a result of seafloor spreading?
a. Trenches form at transform boundaries.
b. Mid ocean ridges form at convergent boundaries.
c. Mid ocean ridges form at divergent plate boundaries
d. Trenches form at divergent boundaries.
while excavating you find a series of buttons made of shell. good eye! what chronometric dating method would you use to discover their age?
When excavating and finding a series of buttons made of shell, the chronometric dating method that would be used to discover their age is Radiocarbon dating.
What is Radiocarbon dating?Radiocarbon dating is an archeological technique that determines the age of carbon-bearing materials up to 60,000 years old. It is used to date organic materials such as wood, charcoal, and bone, as well as inorganic materials like shell and limestone.
Radiocarbon dating, also known as carbon-14 dating, is a method used to determine the age of organic material by measuring the amount of carbon-14 present. It is based on the fact that carbon-14 (14C) is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.
The carbon-14 in the atmosphere combines with oxygen to form carbon dioxide, which is then incorporated into plants through photosynthesis. Animals then eat the plants and consume the carbon-14, and this is how it enters the food chain. When an organism dies, it stops taking in carbon-14, and the carbon-14 that was in the organism begins to decay.
This decay is measured by comparing the amount of carbon-14 to the amount of carbon-12 (12C) in the sample. By comparing the ratio of carbon-14 to carbon-12 in a sample with that of a living organism, it is possible to determine the age of the sample.
Based on the aforementioned explanation, the chronometric dating method that would be used to discover the age of the shell buttons found while excavating is Radiocarbon dating.
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__________ occurs when water passes over a waterfall; the force of which creates swirling and eroding at the bottom, which cuts away at its base.
Hydraulic action occurs when water passes over a waterfall; the force of which creates swirling and eroding at the bottom, which cuts away at its base.
What is hydraulic action?Hydraulic action is the erosion of the soil or rocks by the abrasive action of moving water. It refers to the pressure exerted by water on the bed or banks of the river, caused by its velocity. The hydraulic action is the erosion of the banks or bed of a river, resulting from the force of moving water or waves. Water pressure is so great in hydraulic action that it dislodges rock or soil particles and transports them downstream. The swirling action at the base of a waterfall, created by the force of water, is a good example of hydraulic action. Therefore, the correct answer is hydraulic action.
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