Answer:
DNA mutation causes genetic variation by altering the genes of individuals in a population. Gene flow leads to genetic variation as new individuals with different gene combinations migrate into a population.
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism’s DNA that create diversity within a population by introducing new alleles.
Describe the cytological observation that suggests that crossing over occurs during the first meiotic prophase.
Answer:
Describe the cytological observation that suggests that crossing over occurs during the first meiotic prophase.
Explanation:
Cells are made up of a colorless, jellylike substance called __ in which food elements such as
proteins, fats, carbohydrates, minerals, and water are present.
a. Plasma
b. Protoplasm
c. Cytoplasm
d. Membrane
Cells are made up of a colorless, jelly-like substance called protoplasm in which food elements such as proteins, fats, carbohydrates, minerals, and water are present. Option B is correct.
Protoplasm refers to the colorless, jelly-like substance that is present inside the cell membrane of the cell, and it is the living substance of the cell. All the activities of the cell are carried out in the protoplasm. It comprises the cell's nucleus, cytoplasm, and cell membrane. Protoplasm is a term used to describe the living substance found within cells.
It is the collective term for the cytoplasm and nucleus of a cell. Protoplasm includes various components such as water, proteins, lipids, carbohydrates, nucleic acids, and other organic and inorganic molecules. It plays a vital role in maintaining the structure, metabolism, and functioning of cells. Option B is correct.
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Answer: b. Protoplasm.
Explanation: Cells are composed of various components, including the protoplasm. Protoplasm refers to the colorless, jelly-like substance that fills the cells. It contains all the essential components necessary for the cell's functioning, such as proteins, fats, carbohydrates, minerals, and water.
Protoplasm consists of the cytoplasm and the nucleus, which are enclosed by the cell membrane.
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•••**PLS HELP ME**•••
Answer:
earthquake- major geological event that occurs when plates…
Geoscience process- any natural process…
Tectonic plate- huge piece of crust …
Global- relating to the whole world
Microscopal- describing something so small…
Explanation:
Hope this helps! Have a great day :)
Where does the moon get its light from?
Answer:
The moon shines because its surface reflects light from the sun.
Explanation:
^
Answer:
The sun
The moon shines because its surface reflects light from the sun. And despite the fact that it sometimes seems to shine very brightly, the moon reflects only between 3 and 12 percent of the sunlight that hits it. The perceived brightness of the moon from Earth depends on where the moon is in its orbit around the planet.
Explanation:
in general what causes a sea breeze
Answer:
The difference in air density between the land and sea cause y the sun's heating.
Explanation:
The sea breeze circulation is composed of two opposing flows; one at the surface (called the sea breeze) and one aloft (which is a return flow)
Which of the following describes a mutation?
A. a person becoming tan after sitting in bright sunlight
B. a mother bird gathering food for her chicks
C. the changing of the structure of a gene
D. a change in the migratory patterns of a sea turtle due to increase water temperature
18) Why do rabbits from polar regions have white fur?
A) The white fur is more attractive.
B) The white fur camouflages them in the snow.
The white fur reflects more light warming the rabbit
D) The white fur makes the rabbits stand out in the snow.
Answer:
B) it is used to camoflauge the rabbit in the snow
Explanation:
To protect this rabbit from predators its evolved in this region with white fur to blend in,thus protecting it from being eaten or hunted
Answer: B. The white fur camouflages them in the snow.
Explanation: The reason rabbits from polar regions have the white fur is so they can camouflage in the snow to protect themselves from predators. It's the same reason why a lot of animals look like the environment around them. It protects them from being eaten by local predators in the area.
Hope this helps! :)
Select the correct answer.
What significance does the temperate zone have on commercial fishing?
A.
The zone’s clear water makes it easier to catch fish.
B.
The zone mostly consists of large fish that are more commercially viable.
C.
The zone has a greater abundance of commercial species.
D.
The zone has very few mammalian species that compete for the fish.
Please help quick with question
Answer:
Mutation
Explanation:
mutations are random and genetic and create many variatys
1. Mr. Jones is 72 years old and wants to stay in his own home for as long as possible, but he has
fallen twice this year and suffered small cuts and bruises on both occasions. He has assistive
equipment and handrails in his home, but he rarely uses them and sees the falls as "no big deal."
As his CAREGiver SM, it's your job to make sure Mr. Jones remains safe, mobile and independent.
You know that addressing the topic of falls and asking Mr. Jones to use the assistive equipment and
handrails is important because:
A. Falls are the most common cause of nonfatal injuries and hospital admissions for older adults.
B. in 25 adults age 65 and older falls each year.
C. If Joe has cuts and bruises, his family will accuse you of abuse.
Answer:
A
Explanation:
If he continues to be hospitalized for the same problem, they may very well send him to a hospice home so that he's better taken care of.
Addressing the topic of falls and asking Mr. Jones to use the assistive equipment and handrails are important because falls are the most common cause of nonfatal injuries and hospital admissions for older adults. Thus, the correct option is A.
What are Nonfatal injuries?Nonfatal injuries may be defined as those injuries that harm the body of an individual from severe exposure to an external force or substance. This method of injury is significantly unintentional.
Fallen down immediately is the characteristic feature of old aged people due to lack of balance and shivering activity due to deterioration of the cerebellum part of the brain that maintains the balance of the body.
It is necessary to advise Mr. Jones to use such assistive equipment because of nonfatal injuries and the admission of a large number of old aged people is frequently seen nowadays. So, in order to prevent the same, it is necessary to suggest Mr. Jones to utilized such assistive equipment.
Therefore, the correct option for this question is A.
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What % of Earth's microbial life has been identified
Answer:
About 0.001 percent of identified microbial life.
Explanation:
⭕EXPLAIN FACTORS AFFECTING PHOTOSYNTHESIS.
=====================×============×=================
Light intensity: Without sufficient light a plant cannot do Photosynthesis properly. Carbon dioxide concentration: Without carbon dioxide plant can't do Photosynthesis. Because it plays a very important role.Hope it helpsUse the periodic table to identify the chemical
symbol or name for each element below.
zirconium:
rhenium:
:As
:K
tin:
yttrium:
Yb:
Answer:
ok wait in comments..........................
Blink-blanks use a complex mathematical formulas to predict temperatures win cloud formation and prediction
Answer:
Weather forecasting is the application of science and technology to predict the conditions of the atmosphere for a given location and time.
Explanation:
How will you justify the need of saprophytes in the ecosystem?
Answer:
It is because they are extremely beneficial. The reason saprophytes are so beneficial to the environment is that they are the primary recyclers of nutrients. They break down organic matter so that the nitrogen, carbon, and minerals it contains can be put back into a form that other living organisms can take up and use.
Coastal counties are growing three times faster than counties elsewhere in the nation. Unfortunately, this increasing concentration of people upsets the natural balance of estuarine ecosystems. All but one factor is a negative result of the urban sprawl to the coast.
A) Commercially important species drop in numbers.
B) The breeding grounds of many species is destroyed.
C) They provide economic benefits for tourism and fisheries.
D) Toxins, such as herbicides and pesticides, enter the water supply.
Answer:
The answer is c
Explanation:
I took the test plus that is the only benificial thing to get from the increase
A factor which is a positive result of an urban sprawl to the coast is that: C. they provide economic benefits for tourism and fisheries.
What is an urban sprawl?An urban sprawl is also referred to as urban encroachment or suburban sprawl and it can be defined as a rapid expansion of urban developments with respect to the geographic extent of undeveloped land near cities and towns.
Furthermore, urban sprawl is often characterized by the following features:
Traffic congestionIncreased energy use.Low level of cohesiveness in communities.PollutionIn this scenario, a positive result of an urban sprawl to the coastal counties is that they would provide economic benefits for tourism and fisheries.
Conversely, a negative result of this urban sprawl is that the breeding grounds of many species of living organism are destroyed.
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What is the largest single cell and how big is it? and What is the smallest cell?
The largest single cell Algae such as Acetabularia, a genus of green algae typically found in subtropical waters, can reach 10 centimeters, and the smallest cell in the human body for example is sperm.
The biggest single cellAlgae such as Acetabularia, a genus of green algae typically found in subtropical waters, can reach 10 centimeters, being one of the largest uninuclear cells found.
As they are multinuclear, species of the genus Caulerpa can be found, one of the largest cells in the world.
The yolk of an egg is a single cell when not fertilized. An ostrich egg yolk is therefore the largest cell in the world by volume!
With this information, we can conclude that the largest single cell Algae such as Acetabularia, a genus of green algae typically found in subtropical waters, can reach 10 centimeters, and the smallest cell in the human body for example is sperm.
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I really need help quickly
Answer: I think A
Explanation:
On average, how much does hair grow in one month?
A 1 centimeter
B 7 centimeters
C 15 centimeters
D 30 centimeters
Answer:
A. 1 centimeter
Explanation:
the American Academy of Dermatology stated that a human hair grows at a average of 1/2 inch per month as a total of 6 inches per year
(250 word essay)
What are the environmental problems of this ecosystem and what would be the solution to these problems?
Answer:
Air pollution is one of the biggest threats to the environment and affects everyone: humans, animals, crops, cities, forests, aquatic ecosystems, and much more. Since the Industrial Revolution, people have been polluting the Earth like never before. There is seldom a place today that has not been subjected to pollutants in one shape or another. Air pollution can be defined as an alteration of air quality that can be described by measures of chemical, biological or physical pollutants in the air. Therefore, air pollution means the unwanted presence of impurities or the strange rise in the proportion of some components of the atmosphere. It can be categorized into 2 areas: visible and invisible air pollution. Air pollution is caused by the presence in the atmosphere of harmful substances, mainly built by human activities, even though occasionally it can result from biological phenomena such as volcanic eruptions, dust storms, and wildfires, also depleting the air quality. The basic answer for air pollution is to drive away from fossil fuels, replacing them with alternative fuels like solar, wind, and geothermal. Creating clean energy is necessary. But equally crucial is to reduce our consumption of fuel by assuming trustworthy habits and using more efficient machines. From planning to destruction, the green building seeks to create environmentally accountable and resource-efficient systems to reduce its carbon footprint. In addition, monitoring air pollution levels has evolved into extremely necessary to detect pollution highlands, better manage air pollution, and ultimately enhance air quality.
Explanation:
You need 4 more words.
Some common environmental problems that ecosystems may face and potential solutions are habitat loss and fragmentation, pollution, climate change, loss of biodiversity, invasive species, overexploitation of resources, etc.
Habitat loss and fragmentation: Ecosystems can be impacted by the destruction and fragmentation of habitats due to human activities such as deforestation, urbanization, and infrastructure development. Solutions include implementing protected areas, reforestation and habitat restoration programs, and sustainable land-use practices.Pollution: Pollution from various sources, including industrial activities, agricultural runoff, and improper waste disposal, can degrade ecosystems and harm organisms. Solutions involve implementing stricter environmental regulations, promoting cleaner production methods, improving waste management systems, and raising awareness about pollution prevention.Climate change: Rising global temperatures, altered precipitation patterns, and increased frequency of extreme weather events pose significant challenges to ecosystems. Solutions include reducing greenhouse gas emissions, transitioning to renewable energy sources, promoting energy efficiency, and adapting conservation strategies to mitigate the impacts of climate change.Invasive species: Non-native species can outcompete native species, disrupt ecological processes, and negatively impact biodiversity. Strategies to address invasive species involve early detection and rapid response programs, implementing control measures, and preventing the introduction and spread of invasive species through improved biosecurity measures.Overexploitation of resources: Unsustainable harvesting of natural resources, such as overfishing, illegal logging, and poaching, can deplete populations and disrupt ecosystem dynamics. Solutions include implementing sustainable management practices, enforcing regulations, promoting responsible consumption, and supporting local communities in adopting alternative livelihoods.Loss of biodiversity: Ecosystems are facing a global decline in biodiversity, with species extinction rates accelerating. Solutions involve establishing protected areas, conserving critical habitats, promoting sustainable land-use practices, and raising awareness about the value of biodiversity.Learn more about Ecosystem, here:
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what is the answer to this?
How does non random mating cause evolution
How non-random mating causes evolution is by individuals choosing their mate meaning that some individuals ls pass on some genes while others do not
Option C is correct
What is Non-random mating?Generally, Non-random mating happens when the chance that two species of a population will mate is not equal for all possible pairs of individuals.
In conclusion, This is when Species mate or select mates based on physical or specific attibutes
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(1) What will happen to the population of deer with no predators in their food web?
(2) What will happen to other species of plants and herbivores on the island?
(3) What could scientists do to balance this ecosystem?
Answer:
The population would increase okay the plants and herbivores would decrease because of the deers and lack of enough food I had to think about it
Explanation:
I don't know the other sorry..
During composting, what happens to the initial ingredients such as food waste, paper products, and yard debris?
ANSWER HAS TO BE RIGHT AND EXPLAINED WELL TJJ OH BE BRAINLIEST
A. decomposition
B. planting
C. pollution
D. fertilization
Answer: decomposed
Explanation:
omposting is the natural process of decomposition and recycling of organic material into a humus rich soil amendment known as compost. For any business or institution producing food waste, this organic material can be easily decomposed into high quality compost.
:)
Answer: A. decomposition
Explanation:
Gas exchange occurs in the
Answer:
the lungs
Explanation:
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in "the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli."
Farmers spray pesticides on their plants to protect the plants from being eaten by insects. Some individual insects have a genetic mutation that makes
them resistant to the toxins in the pesticides. Which statement best describes how only a few resistant individuals resulted in the pesticide becoming
ineffective?
o The resistant insects are able to survive to reproduce and create a population that is also resistant
The resistant insects grow larger and eat less of the plants.
The resistant insects change the toxin on the plants, making it safe for others.
o
The resistant insects eat the contaminated surface and leave the rest for others
The correct option here will be A)
only a few resistant individuals resulted in the pesticide becoming
ineffective because The resistant insects are able to survive to reproduce and create a population that is also resistant.
How do insects become resistant to pesticides over time?spraying the same pesticide often enables the pests to develope resistant genes which enable them to survive. Insects without resistance genes die when exposed to insecticides, allowing individuals with resistance genes to survive and breed, resulting in more resistant insects. The number of resistant insects grows with each generation. hence the pesticide often becomes ineefective over time.
Hence The resistant insects are able to survive to reproduce and create a population that is also resistant.
other options are incorrect because:
resistant insects growing larger and eat less of the plants des not contribute to pesticide resistance.The resistant insects cannot change the toxin on the plants this is an impossible thing.The resistant insects eating the contaminated surface and leaving the rest for others wont result in the pesticide becoming ineffective,learn more about insect resistance here:
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25 Points and Brainliest, incorrect answers will be flagged.
Which phase of cell division is shown?
A: metaphase
B: prophase
C: telophase
D: anaphase
The cell cycle is a repeating sequence of cellular growth and division during the life of an organism. Which of the following is not a true statement concerning cell division of body cells?
Cells divide when the parent cell gets too big.
Cells divide in order to maintain homeostasis.
Cells divide in a process called meiosis.
Cells divide in order to repair themselves when damaged.
The statement that is untrue regarding cell division of body cells is that cells divide in a process called meiosis.
What is cell division?Cell division is the process by which living cells produce new daughter cells from a single parent cell.
Body cells divide for the following reasons:
Cells divide when the parent cell gets too big.Cells divide in order to maintain homeostasis.Cells divide in order to repair themselves when damaged.Body cells undergo division using a specific type of cellular division called mitosis. This mitosis results in the formation of two identical daughter cells.
Therefore, the statement that is untrue regarding cell division of body cells is that cells divide in a process called meiosis.
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If you obtained your daily vitamin A from beta-carotene, how much would you have to consume from foods to meet the RDA of 700 mcg RAE (3 points)? List at least 2 symptoms of vitamin A deficiency AND toxicity (1 point). List at least 2 major foods of vitamin A and describe at least 3 health benefits of vitamin A for the body. (2 points)
Foods that contain substantial amounts of vitamin A include beef liver, spinach, broccoli and liver oil.
What is vitamin A?Vitamin A is a fundamental micronutrient that must be ingested in the diet in suitable amounts.
Leafy green vegetables (such as spinach) or orange vegetables (such as carrots) contain many vitamin A.
Vitamin A benefits include:
supports the immunityreduces ac_nesupports bonesLearn more about vitamin A here:
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Murray has been diagnosed with social anxiety. His therapist's practice aligns closely with the psychological theory of abnormality that focuses on psychodynamic explanations of psychological disorders. Which explanation is Murray's therapist MOST likely to give to explain Murray's social anxiety?
Murray's thought process is illogical in that he believes no one will find him likeable.
Murray subconsciously expects people to leave him since he was abandoned by his father.
Murray's interactions with people were punished when they resulted in embarrassment.
Murray expresses an unusually high level of neuroticism and introversion.
Answer:
I'd go with D: Murray expresses an unusually high level of neuroticism and introversion.