The main circumstance which most Central African nations experienced since gaining independence is problem of corruption and ethnic conflict. The Option 1 is correct.
How do corruption and ethnic conflict affect Central African nations?Corruption has been a major issue in many African countries, with government officials and business leaders embezzling public funds and engaging in other forms of corrupt practices. This has led to widespread poverty, economic stagnation, and political instability.
Ethnic conflict has also been a recurring problem in many Central African nations, often fueled by political or economic competition between different groups. These conflicts have led to displacement, violence, and loss of life.
Also, poor transportation systems, lack of infrastructure, and other development challenges have also been prevalent issues in the region. While some countries have experienced resource booms from minerals such as diamonds and natural gas, many have struggled to benefit from their natural resources due to corruption and mismanagement.
Full question "Which circumstances have most Central African nations experienced since gaining independence? 1. corruption and ethnic conflict 2. ethnic conflict 3. pollution of the air and destruction of plants and animals 4. iron ore diamonds and natural gas 5. palm oil 6. exploiting the colonies for profit 7. Portugal 8. Central African Republic 9. Men and women eat in separate rooms. 10. poor transportation system"
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a flood in an unmodified stream will deposit sediment outside the normal stream banks on the floodplain. when levees are constructed to confine floods, the sediment is deposited in the stream channel, which means that
When levees are constructed to confine floods, sediment is no longer deposited outside the normal stream banks on the floodplain, but is instead deposited in the stream channel. This is because the levees prevent flooding, and therefore the sediment is deposited within the stream channel instead.
When the stream channel is confined by levees, the natural flow of water is disrupted, and the sediment that would typically be deposited on the floodplain is instead forced to settle in the stream channel.
Over time, this can cause the stream channel to become shallower, narrower, and more susceptible to flooding due to a reduced capacity to hold water. This can also lead to the formation of sandbars and other sediment deposits in the channel.
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zoologists from peru and chile have been examining climate records from the coastal deserts of their countries. these deserts are the driest on earth, yet they lie within the southward reach of the intertropical convergence during the southern hemisphere summer. explain this curious phenomenon.
The coastal deserts of Peru and Chile are some of the driest on earth, yet they fall within the reach of the Intertropical Convergence Zone (ITCZ) during the Southern Hemisphere summer. This curious phenomenon can be explained by the interaction between the equatorial Pacific trade winds and the Andes Mountains.
The prevailing trade winds push the ITCZ, a band of thunderstorms, southward and as it moves, it brings moisture to the coastal deserts. The mountains, however, cause an interruption in the airflow, leading to the convergence of these trade winds and the creation of more powerful upslope winds which increase the rainfall in these desert regions.
The ITCZ’s reach is not unlimited, however, and as it passes over the Andes it loses much of its moisture. Additionally, the Atacama Desert, located just south of the ITCZ, is highly influenced by the cold Peru Current and is blocked from receiving moisture from the Pacific. These factors all contribute to the extraordinary aridity of the coastal deserts, despite their close proximity to the ITCZ.
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the volcanic islands visible here formed as a result of a mantle plume. which volcanic island is the oldest and subsiding into the sea?
The volcanic island that is the oldest and subsiding into the sea is the Hawaiian Islands. The Hawaiian Islands, the volcanic islands visible in the image provided, were formed as a result of a mantle plume.
The Hawaiian Islands are a chain of volcanic islands in the Pacific Ocean that were formed from volcanic activity over millions of years. The islands were formed by the Hawaiian hot spot, which is an area where magma from the Earth's mantle reaches the surface.
In terms of age, the Hawaiian Islands are the oldest of the volcanic islands visible in the image provided. Furthermore, the oldest of the Hawaiian Islands is Kauai, which is also the one that is subsiding into the sea.
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mars's seasonal winds are driven primarily by group of answer choices dust vaporization of carbon dioxide ice. vaporization of water ice. changes in air pressure due to volcanic activity.
The seasonal winds on Mars are primarily driven by changes in air pressure due to volcanic activity.
The most important factor controlling the winds is the variation in pressure that is caused by the varying amounts of carbon dioxide, dust, and water ice in the atmosphere. During the Martian year, the atmospheric pressure can change drastically, as the air warms and cools over the course of a Martian year. The changes in pressure cause winds to blow from higher-pressure regions to lower-pressure regions. This pressure difference causes dust storms, as well as the polar winds which can be seen in images of the Martian surface. The amount of vaporization of carbon dioxide and water ice can also affect the wind speeds, but the main factor remains the pressure difference.
In conclusion, the seasonal winds on Mars are primarily driven by changes in air pressure due to volcanic activity. This pressure difference is caused by varying amounts of carbon dioxide, dust, and water ice in the atmosphere, resulting in dust storms and polar winds. The vaporization of carbon dioxide and water ice can also contribute to wind speed, but the main factor remains the pressure difference.
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calcite is the main mineral constituent of the sedimentary rock limestone and of the metamorphic rock marble. true false
The given statement “Calcite is the main mineral constituent of the sedimentary rock limestone and of the metamorphic rock marble” is true.
What is calcite?Calcite is a mineral that is composed of calcium carbonate, which is found in many forms, including marble, limestone, and chalk. Calcite is a common mineral and is found in large quantities all over the world. It can be found in many colors, including white, gray, yellow, green, pink, blue, and black, and it is often used in construction and manufacturing processes.Limestone and marble:Limestone is a sedimentary rock that is composed mainly of calcium carbonate (CaCO3), which is often derived from the accumulation of marine shells and skeletons.
Marble is a metamorphic rock that is formed when limestone is subjected to heat and pressure over time.Both limestone and marble contain a high percentage of calcite, which is why they are both considered to be calcareous rocks. Calcite makes up the majority of the mineral content in these rocks and is responsible for their distinctive physical and chemical properties.
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The __________ Divide separates the water that flows into the Gulf of Mexico on its way to the Atlantic Ocean from the water that flows into the Pacific Ocean.
The Rocky Mountains divide separates the water that flows into the Gulf of Mexico on its way to the Atlantic Ocean from the water that flows into the Pacific Ocean.
What is Rocky Mountain?Rocky Mountain is a long mountain range situated in North America that stretches around 4,800 kilometers (3,000 miles) from New Mexico, the United States, to British Columbia, Canada. The Rocky Mountains, also known as the Rockies, have a height of up to 4,401 meters (14,440 feet).The Rocky Mountains are a major range of mountains in western North America.
What are the Rocky Mountains like?The Rocky Mountains feature a variety of terrains and environments, including forests, valleys, tundras, glaciers, and plains. These environments house a diverse array of flora and fauna, such as elk, deer, and mountain lions. The Rocky Mountains are also home to several national parks, including Yellowstone National Park and Rocky Mountain National Park.
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8. What is the collective role of water vapor, carbon dioxide, ozone, and methane in the atmosphere?
A. They prevent harmful ultraviolet radiation of the sun from reaching earth
B. they are important components of the water cycle, which regulates the earths temperature
C. they regulate earths climate by trapping heat and holding it within earths atmosphere
D. they scatter almost a third of the sunlight that reaches the outer layers of the atmosphere back into space
Answer: C. They regulate Earth's climate by trapping heat and holding it within Earth's atmosphere.
sediments are small rocks fragement such as sand or pebbles . what evidence do you see that sediments are being transported?
Evidence of sediment being transported can be seen in a variety of ways. For example, when you look at a beach, you can see that the sand has been moved and shifted. This is due to the waves and wind that cause the sand to be pushed around.
Another way to see evidence of sediment being transported is during a flood. During a flood, large rocks and other debris can be seen being carried away by the rushing water. This is because the water has the power to move larger pieces of sediment than the wind or waves. Sediment can also be seen being transported by glaciers.
As glaciers move, they pick up rocks and other sediment and move it with them. This can be seen when looking at the moraines created by glaciers as they move. In short, sediment can be seen being transported in a variety of ways, from waves and wind on the beach to glaciers and flooding.
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black smokers in the bottom of the ocean are evidence of active hydrothermal metamorphism. group of answer choices true false
Yes, black smokers in the bottom of the ocean are evidence of active hydrothermal metamorphism. Hydrothermal metamorphism is a process of geologic transformation that occurs when hot, mineral-rich water circulates through rock formations.
Black smokers are large chimney-like structures created by hydrothermal vents, which form when the hot water mixes with cold seawater. The chimneys are composed of metal-rich minerals that are created when the hot water interacts with the ocean floor. These minerals give the chimneys a black color, thus the name black smoker.
The presence of these structures in the ocean floor indicates that hydrothermal metamorphism is still alive and well. The mineral-rich water that is released from the chimneys is also responsible for the formation of new minerals and the alteration of existing ones. Thus, the presence of black smokers is an indication of active hydrothermal metamorphism.
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3. what are the major climate patterns of the middle east? list the principal mountains, deserts, and rivers found here.
The major climate patterns of the middle east are hot and dry climates, with an arid and semi-arid environment characterizing most territories. the principal mountains, deserts, and rivers found in the Mediterranean Sea.
The middle east is located near the equator because of that the temperatures are very high in summer, they have wet and mild winters, and the rainfall is very low due to these conditions there are more deserts
The list of principal mountains, deserts, and rivers:
1. Mountains:
Sarawat MountainQurnat as-SawdaThe Moroccan Toubkal Mount AraratMount Damavand2. Deserts:
The Sahara DesertThe Arabian DesertThe Sinai DesertThe Libyan DesertThe Nubian Desert3. Rivers:
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based on the chart, in which region of the world is an individual the least likely to have access to any basic or limited handwashing facility?
Based on the chart, the region of the world in individual regions that is the least likely to have access to any basic or limited handwashing facility is Sub-Saharan Africa
What is Sub-Saharan Africa?Geographically speaking, Sub-Saharan Africa refers to the parts of the African continent south of the Sahara. Central Africa, East Africa, Southern Africa, and West Africa are among them.
Based on the chart, it can be seen that there are different regions that have poor access to healthcare and other important social and health variables, but Sub-Saharan Africa has the LEAST chance of having access to these.
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if quartz is present in an igneous rock, what composition must it be?group of answer choicesultramaficmaficintermediatefelsic
If quartz is present in an igneous rock, it must be of felsic composition.
Igneous rocks are formed from solidification and cooling of lava or magma. Magma is a molten material beneath the Earth's surface. If it cools and solidifies inside the Earth, it forms plutonic rocks. If it cools and solidifies on the surface, it forms volcanic rocks.Igneous rocks are further divided into four main groups depending on their chemical composition. The four groups are as follows: Ultramafic, Mafic Intermediate and Felsic.
Each group is determined by the proportion of minerals present in the rock. The amount of silica present in the rock is used to determine the groups. Felsic rocks contain the most silica while ultramafic rocks contain the least silica. Mafic rocks have an intermediate silica content while intermediate rocks have a silica content that is between that of felsic and mafic rocks.Quartz is a mineral that is rich in silica. Therefore, if quartz is present in an igneous rock, it must be of felsic composition.
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infer why weather ahead of a warm front might be colder and rainier than weather ahead of a cold front
The weather ahead of a warm front is typically colder and rainier than the weather ahead of a cold front because of the differences in the air masses that move ahead of each type of front.
A warm front is typically preceded by a warm air mass, which is generally more humid than a cold air mass. This warm, humid air is unstable, meaning it rises quickly and creates large amounts of precipitation in the form of rain or snow.
The cold front, on the other hand, is usually preceded by a cold, dry air mass, which is more stable than the warm air mass, meaning it rises more slowly and causes much less precipitation.
As the warm air mass rises, it also cools, creating colder temperatures ahead of the warm front. Therefore, the weather ahead of a warm front is typically colder and rainier than the weather ahead of a cold front.
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where do you weigh more--at the bottom of death valley or atop one of the peaks of the sierra nevada? defend your answer.
according to the introduction lecture, which of the following is not one of the four subfields of anthropology?Physical/Biological Anthropology
Linguistics
Paleontology
Archaeology
what are the most likely changes to atmospheric temperature and precipitation along the west coast of south america during el nino
During El Nino events, the west coast of South America experiences warmer atmospheric temperatures and reduced precipitation.
El Nino events typically lead to an increase in sea surface temperatures in the central and eastern tropical Pacific Ocean. This warm oceanic anomaly affects the atmospheric circulation and leads to warmer temperatures along the west coast of South America.
El Nino is associated with a shift in rainfall patterns, resulting in decreased precipitation along the west coast of South America. The warm oceanic conditions disrupt the normal atmospheric circulation patterns, leading to a weakening or reversal of the trade winds.
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what kind of drainage pattern would develop on the slopes of mount rainier, an isolated volcano in washington state? dendritic radial rectangular trellis
Answer: The kind of drainage pattern that would develop on the slopes of Mount Rainier, an isolated volcano in Washington State, is radial.
Explanation:
What is a drainage pattern?
A drainage pattern refers to the design that is created by the flowing water. When water flows, it creates several channels, and the combination of all these channels forms a drainage pattern.
What is a radial drainage pattern?
A radial drainage pattern refers to a type of drainage pattern that occurs when streams flow in all directions outward from a central peak or dome-like structure. In this kind of drainage pattern, the streams flow in straight lines, and they follow the slopes of the land in a radial manner.
In conclusion, the kind of drainage pattern that would develop on the slopes of Mount Rainier, an isolated volcano in Washington State, is a radial drainage pattern.
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chemical sedimentary rocks are classified (named) based on the . group of answer choices grain sizes of the detrital particles degree of compaction and lithification colors of the cementing minerals mineral composition
Chemical sedimentary rocks are classified based on the mineral composition of the rock.
This classification is based on the minerals that make up the rock, as the minerals provide clues to the environment of deposition. The mineral composition of the rock is determined by the grain sizes of the detrital particles, degree of compaction and lithification, and colors of the cementing minerals.
Grain size is an important factor in determining the mineral composition of a rock. Detrital particles that make up the rock will range from fine-grained (clay-sized particles) to coarse-grained (pebble-sized particles).
Coarse-grained particles are more likely to form mineral grains such as quartz, feldspar, and mica, while finer-grained particles are more likely to form clays.
The degree of compaction and lithification are also important in determining the mineral composition of a rock. Compaction is the process of squeezing and rearranging particles together and lithification is the process of changing loose sediment into solid rock.
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where would you find the warmest waters? responses polar zone polar zone deep zone deep zone surface-mixed zone surface-mixed zone transition zone
The warmest waters can be found in the surface-mixed zone.
The surface-mixed zone is the uppermost layer of the ocean, where the warmest water is found. The polar zone, deep zone, and transition zone are all regions of the ocean that are colder than the surface-mixed zone. The polar zone is the region of the ocean that is closest to the poles and is characterized by cold temperatures and ice.
The deep zone is the region of the ocean that is deepest and is characterized by low temperatures, high pressure, and little to no light. The transition zone is the region of the ocean that separates the surface-mixed zone from the deep zone, and is characterized by a rapid decrease in temperature with depth.
In conclusion, the warmest waters can be found in the surface-mixed zone of the ocean.
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Answer: the answer is C) surface-mixed zone.
Explanation: i got a 100 on the 3 question test
what is the interpreted plate motion direction for the pacific plate for the time period between the formation of kauai and the big island of hawaii
Interpreted plate motion direction for the Pacific plate for the time period between the formation of Kauai and the Big Island of Hawaii is northwest, as it moves over the Hawaii hotspot.
Plates on Earth’s lithosphere have been in motion since the creation of the planet, and the movement of plates causes numerous geological phenomena, including mountain formation, volcanic eruptions, and earthquakes.
The Pacific Plate, on the other hand, has moved in various directions in recent geological history, including northward, southeastward, and westward. The direction of motion of the Pacific Plate is northwest over the Hawaii hotspot, resulting in the creation of the Hawaiian Islands.
The interpretation of plate motion helps scientists to understand the past motion of plates, present geological phenomena, and future outcomes of plate tectonics.
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which of the following are geologic settings where travertine can form? choose one or more: a. in glacial lakes b. in caves c. in fast-moving rivers d. near hot springs e. in swamps
Travertine can form in a variety of geologic settings, including in caves, near hot springs, and in fast-moving rivers. Therefore the correct option is option A, B and C.
In caves, travertine forms as a result of carbon dioxide in the air dissolving in water. This results in an increase in the acidity of the water, which in turn dissolves the rock the cave is made of and deposits the resulting sediment in the form of travertine.
Near hot springs, the water is saturated with dissolved minerals such as calcium carbonate, which can also be deposited in the form of travertine.
In fast-moving rivers, the increased turbulence can cause the suspended sediment in the water to become trapped and deposited in the form of travertine.
Travertine can also form in glacial lakes, but not in swamps.
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the driving force of plate tectonics is group of answer choices sea-floor spreading. geomagnetism. atmospheric circulation. all of the above
The driving forces of plate tectonics include sea-floor spreading, geomagnetism, and atmospheric circulation. All of the above are driving forces of plate tectonics.
Sea-floor spreading is the movement of tectonic plates away from mid-ocean ridges, which is caused by magma pushing up from the Earth's mantle and solidifying. Geomagnetism is the magnetic field created by molten iron in the Earth's core, which contributes to the directional movement of plates. Atmospheric circulation, the flow of air in the atmosphere, affects the formation of large-scale wind and ocean currents that can move the plates.
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a sandstone bed strikes 140 across a stream. the tresam flows down a narrow gorge with vertical walls. the apparent dip of the bed on the walls of the gorge is 25, 095. what is the true dip of the bed?
Answer : The true dip of that sandstone bed is 25°95'.
The apparent dip of the bed on the walls of the gorge is the angle that the bed strikes across the stream and down the narrow gorge. we calculate the angle of the bed relative to the horizontal plane. The true dip is the angle of inclination of the bed below the horizontal plane.
True dip = 90° - (90° - 25°95') = 25°95'. the true dip of the sandstone bed is 25°95', which is the angle of inclination of the bed below the horizontal plane.
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which statement about air motions is not correct? group of answer choices low-pressure centers are associated with strong convergence aloft. high-pressure centers are associated with divergence at the surface. air rises in the vicinity of low-pressure centers, leading to clouds and precipitation. air sinks in the vicinity of high-pressure centers, leading to relatively clear skies.
The incorrect statement about air motions is: "Low-pressure centers are associated with strong convergence aloft."
What are Air Motions?
Air motions are movements in the Earth's atmosphere caused by a variety of factors, including pressure differences, solar radiation, and temperature contrasts, among others. The air moves from regions of high pressure to regions of low pressure, according to the pressure gradient force (PGF).
As the air rises and cools, the moisture in the air condenses and forms clouds, which can lead to precipitation. The sinking of air results in high atmospheric pressure and creates clear skies. However, as the air reaches the ground, it begins to spread out again, creating the circulation patterns that are commonly associated with high and low-pressure systems.
In summary, high-pressure systems are associated with sinking air, clear skies, and dry weather, while low-pressure systems are associated with rising air, cloudy skies, and precipitation. Therefore, the incorrect statement is "Low-pressure centers are associated with strong convergence aloft."
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based on the distribution of magnetic anomalies, where is the oldest oceanic crust found? the youngest? what are their ages?
The oldest oceanic crust is found in the central Pacific Ocean and the youngest oceanic crust is found along the Mid-Atlantic Ridge. The oldest oceanic crust is about 180 million years old and the youngest oceanic crust is about 3 million years old.
The distribution of magnetic anomalies helps geologists identify the age of the oceanic crust. Magnetic anomalies are created when new oceanic crust is formed due to volcanic activity and tectonic plate movement. The magnetism of the oceanic crust is usually aligned with the Earth's magnetic field when it is first formed. As the Earth's magnetic field reverses, the magnetism of the oceanic crust is "frozen in time" and helps scientists measure the age of the crust.
The oldest oceanic crust is found in the central Pacific Ocean because it has been around the longest and hasn't moved much due to tectonic plate movement. The youngest oceanic crust is found along the Mid-Atlantic Ridge because this is where new oceanic crust is constantly being formed due to tectonic plate movement and volcanic activity.
By studying the distribution of magnetic anomalies, scientists can accurately measure the age of the oceanic crust and identify where the oldest and youngest crust can be found.
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does the southern hemisphere experience hotter summers and colder winters? i ask this because the earth's perihelion is in winter for the northern hemisphere (around january 3rd)
Yes, the Southern Hemisphere does experience hotter summers and colder winters. This is because of the way the Earth's orbit around the Sun is tilted relative to its axis of rotation. The Earth's perihelion, or point of closest approach to the Sun, is in January for the Northern Hemisphere, while it is in July for the Southern Hemisphere.
This means that the Northern Hemisphere gets less direct sunlight during winter, causing colder temperatures, while the Southern Hemisphere gets more direct sunlight during summer, leading to hotter temperatures.
The Earth's axial tilt, or obliquity, is responsible for the Earth's seasons. During winter, the Northern Hemisphere is tilted away from the Sun, and during summer it is tilted towards the Sun. Conversely, the Southern Hemisphere is tilted away from the Sun during summer, and towards the Sun during winter. This difference in angle of sunlight causes the Northern Hemisphere to experience colder winters and hotter summers, while the Southern Hemisphere experiences hotter summers and colder winters.
Additionally, the Southern Hemisphere is more exposed to the ozone layer, which absorbs some of the Sun's ultraviolet radiation, leading to slightly higher temperatures. This explains why the temperatures in the Southern Hemisphere are higher than the Northern Hemisphere during the same season.
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which is true of air flowing into low pressure center? which is true of air flowing into low pressure center? air converges and ascends. air diverges and ascends. air converges and descends. air diverges and descends. the air movement is called anticyclonic.
A low pressure center's airflow congregates and ascends. Cyclic movement is referred to as such. Air rises as a result of the low pressure area that is produced as the air converges.
Clouds and precipitation may form as a result of this rising air. In contrast, clear and dry circumstances result when air moving out of a high pressure center diverges and descends. Understanding these dynamics is crucial for forecasting and predicting weather conditions because air movement into and out of pressure centers plays a significant effect in weather patterns.A zone of low pressure that can result in cloud formation and precipitation is created when air flowing towards a low pressure center converges and ascends. The air flows out of a high pressure center, diverges, and descends; this movement, known as cyclonic, is the opposite of anticyclonic movement.
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what are the differences in a-type tropical climate precipitation patterns? match the climate to its precipitation pattern.
A-type tropical climate is characterized by having a wet season with heavy rainfall, and a dry season with little precipitation. The precipitation pattern in the wet season is mainly caused by convectional rainfall, while in the dry season, the pattern is mainly due to global circulation.
The wet season in the A-type climate is characterized by heavy and intense rainfall, with most of the precipitation occurring in short bursts. This is due to the high humidity and warm temperature of the air, which leads to strong updrafts and convective storms. During the dry season, global circulation patterns are more dominant and rainfall is much lighter and more spread out.
In summary, the A-type tropical climate has a distinct precipitation pattern, where the wet season is characterized by intense, convectional rainfall and the dry season is characterized by lighter, global circulation-driven rainfall.
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The Labrador Current not only brings
cold water south -it brings icebergs
from the Greenland ice sheet. Perhaps
the most famous marine tragedy of all
time happened because of this. What
happened? When did it happen?
Answer:
The marine tragedy being referred to is the sinking of the RMS Titanic, which hit an iceberg on its maiden voyage and sank on April 15, 1912.
The Labrador Current flows southward along the coast of Newfoundland and Labrador, bringing with it icebergs that have calved off the Greenland ice sheet. The Titanic was sailing through this region when it struck an iceberg that had drifted into its path, causing extensive damage to the ship's hull and leading to its sinking.
The tragedy resulted in the loss of more than 1,500 lives and is considered one of the deadliest peacetime maritime disasters in history.
__________ are created when the top of the glacier moves faster than the bottom of the glacier.
Ridges are created when the top of the glacier moves faster than the bottom of the glacier.
A ridge is a formation that is created when the top of the glacier moves faster than the bottom of the glacier. As glaciers move over time, they can create distinct formations in the landscape, and one of these formations is called a ridge. A ridge is formed when the top of a glacier moves faster than the bottom, causing the ice to crack and break off in a jagged line, creating a sharp ridge or peak in the landscape.
Glaciers are known to have a tremendous force that can create a variety of landforms as they move, like valleys, fjords, and moraines. The top of the glacier moves faster than the bottom because of the friction between the ice and the ground. The weight of the glacier on the bottom slows down the movement, while the top can continue to slide forward. This movement can cause stress, which results in fractures, and cracks in the ice, and forms ridges.
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