plz help 50 points
the question is in the screenshot ​

Answer:

A is the answer

Explanation:

I'm just guessing

Genetic variation exists in a population. Some of the genetic variation results in different phenotypes. The phenotypes that enhance survival are called adaptations. So, the correct option is A.

Genetic variation among members of the same species is called genetic variation. This variation may be due to variations in gene expression, DNA sequence and epigenetic changes. Mutation, genetic recombination, and genetic drift are causes of genetic variation, which can be altered by environmental variables including exposure to chemicals or climate changes.

Genetic diversity is important because it gives natural selection a starting point to work from, helping organisms to adapt and change over time. There is genetic diversity within a population. Different phenotypes are the result of some genetic variation. Adaptations are traits that improve survival.

Therefore, the correct option is A.

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Your question is incomplete, most probably the complete question is:

Natural selection, adaptations, genetic variation, and population evolution are all related in terms of changes in phenotypes over time. Evaluate which statement appropriately describes the relationship between the concepts of natural selection, adaptations, genetic variation, and population evolution and select the best choice.

1. Genetic variation exists in a population. Some of the genetic variation results in different phenotypes. The phenotypes that enhance survival are called adaptations. Individuals with well-adapted phenotypes are more likely to survive and reproduce, leading to population evolution over generations.

2. Adaptations exist in certain individuals in a population. The increase in adaptations causes an increase in genetic variation. The adaptations that enhance survival lead to larger populations, which further increases genetic variation. Individuals with well-adapted phenotypes are more Likely to survive and reproduce, leading to population evolution over generations.

3. Genetic variation is high in a population, but random events cause it to decrease. Populations with fewer individuals and lower genetic diversity are able to undergo natural selection when selective pressures are high. The increase in selective pressure causes an increase in adaptations that are better suited for survival This results in an evolutionary change of a population.

4. Selective pressures exist in nature and cause changes in a population. Populations with high selective pressures have higher rates of genetic change, leading to an increase in genetic variation, Increased genetic variation leads to some individuals having well-suited adaptations. The presence of these new adaptations is evidence that the population haschanged, or undergone evolution.

Answer:

plantae............✨✨✨

Answer: the answer is B

Explanation: trust me took the test yesterday

Answer:

MacArthur and Wilson found as distance from New Guinea increses the number of bird species on Pacific Islands decreases.

Answer:

I guess I would say water

Answer:

yea

Explanation:

If u consume to much or have diabetes its cant run it so it turns into fat

Answer:

it can be found in higher plants and embryonic stem cells in animals

Explanation:

around 1880 and 1883

i think

Explanation:

True. it is a virus and that's how viruses reproduce.

HIV is a virus which is unique because it copies the information for reproduction from RNA back into DNA, the statement is true.

A virus is a nonliving thing which is a  connecting link between living and nonliving organism, depend on living host cell for their survival.

virus contain a chain of nucleic acids (DNA or RNA) which  use different parts of the cellular machinery to reproduce, and releases the replicated nucleic acid chains

A virus has a protein coat or protein envelope allows the virus to survive between hosts act as a protective covering, do not have cells and lack a cell wall .

The protein coating is called as the capsid, genetic element present and is characterized by the evolution of the virus and the host.

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Answer:

Chloroplast

Explanation:

Green plants manufacture glucose through photosynthesis. In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.

Answer:

When you're stressed??

Explanation:

i don't really know I never learned this, but I hope this helps

Answer:

In fresh morning......or when ur stressed......or simply when u feel like .......

Answer: Nuclear Fusion occurs when the nuclear components of an atom combine.

Carbon is found in different forms on the Earth. It is found as carbon dioxide in the atmosphere, as carbonate and bicarbonate salts in various minerals, as well as it occurs in the elemental form of diamonds and graphite. All biotic factors are based on carbon-containing molecules like carbohydrates, proteins, fats, nucleic acids and vitamins. Carbon is incorporated into life-forms through photosynthesis which is performed in the presence of sunlight by all life-forms that contain chlorophyll. Photosynthesis converts CO2 from the atmosphere or dissolved in water into glucose molecules. These molecules are either converted into other substances or used to provide energy for the synthesis of other biologically important molecules.

The use of glucose to provide energy to living things involved the process of respiration in which oxygen may or may not be used to convert glucose back into CO2. This CO2 goes back into the atmosphere again. The process of combustion also adds to the level of carbon dioxide in the atmosphere. This percentage is said to have increased when human beings started cutting down trees, burning fossil fuels, etc. on a very large scale. Thus, carbon is cycled repeatedly through different forms by the various physical and biological activities and this cycle is therefore called carbon cycle.

Hope you could get an idea from here.

Doubt clarification - use comment section.

Carbon cycle is a biogeochemical cycle in which the carbon atom continously moves in the atmosphere through different forms and processes.

The carbon cycle is the biogeochemical cycle which describes the process through which carbon atoms continually travel from the atmosphere to back to the Earth and then back into the atmosphere. This cycle goes on repeatedly. Since our planet and its atmosphere forms a closed environment, the amount of carbon in this system does not change, it only transforms from one form to another.

The processes which takes place in carbon cycle include photosynthesis, decomposition, respiration, and combustion. Carbon cycles from the atmosphere into the plants and living things. For example, carbon is a pollutant in the atmosphere which is present as carbon dioxide gas.

Carbon moves from the plants and animals to soil. When the plants and animals die, their bodies, wood, and leaves decays which being carbon into the ground. Some of this carbon is buried and become fossil fuels in millions of years. Carbon moves from living things to the atmosphere through respiration in which they inhale oxygen gas and exhale carbon dioxide gas.

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The ecosystem is a habitat in which different types of biotic and abiotic organisms coexist.

The ecosystem in which we live is coexisting with different types of population. Biotic and abiotic organisms coexist, interdependent organisms that share the same habitat. Through different processes such as predation, symbiosis, parasitism, they will disintegrate and reform to give themselves the energy and nutrient cycle.

The relationship that occurs between the community and its environment will be a flow of matter and energy in the ecosystem. There will also be different types of ecosystems such as marine, terrestrial, microbial and artificial. In all of these there will be food chains between the different species.

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Living things are divided into five kingdoms: animal, plant, fungi, protist and monera. Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.

Answer:

Tube is a connected liver alimentary canal

Explanation:

Tube id miob

Explanation:

pretty sure the answer is, "adaptation."

only the creatures that can adapt 2 changing environments are the ones who survive...

Answer:

hey dad can i have some money

if he says no

then no

Explanation:

Answer:

First ask for a small amount than right after he gives you the small amount ask for a bigger amount

This trick works all the time

Explanation:

Answer:

If you gently bend your ear, and then let go, the shape of your ear will return because the cartilage of your ear contains elastic fibers.

Answer:

contact forces is answer

Answer:

The soil air​ is responsible for influencing the availability of many nutrients. Soil air is also by many of the microorganisms that release plant nutrients to the soil. The soil air can fill soil pores as water drains or is removed from a soil pore by evaporation or root absorption.

Explanation:

Answer:

Carbon is the backbone of life on Earth. We are made of carbon, we eat carbon, and our civilizations—our economies, our homes, our means of transport—are built on carbon. We need carbon, but that need is also entwined with one of the most serious problems facing us today: global climate change.

Photograph of a forest.

Photograph of a coal fire.

Carbon is both the foundation of all life on Earth, and the source of the majority of energy consumed by human civilization. [Photographs ©2007 MorBCN (top) and ©2009 sarahluv (lower).]

Forged in the heart of aging stars, carbon is the fourth most abundant element in the Universe. Most of Earth’s carbon—about 65,500 billion metric tons—is stored in rocks. The rest is in the ocean, atmosphere, plants, soil, and fossil fuels.

Carbon flows between each reservoir in an exchange called the carbon cycle, which has slow and fast components. Any change in the cycle that shifts carbon out of one reservoir puts more carbon in the other reservoirs. Changes that put carbon gases into the atmosphere result in warmer temperatures on Earth.

Draft diagram of the carbon cycle.

This diagram of the fast carbon cycle shows the movement of carbon between land, atmosphere, and oceans. Yellow numbers are natural fluxes, and red are human contributions in gigatons of carbon per year. White numbers indicate stored carbon. (Diagram adapted from U.S. DOE, Biological and Environmental Research Information System.)

Over the long term, the carbon cycle seems to maintain a balance that prevents all of Earth’s carbon from entering the atmosphere (as is the case on Venus) or from being stored entirely in rocks. This balance helps keep Earth’s temperature relatively stable, like a thermostat.

This thermostat works over a few hundred thousand years, as part of the slow carbon cycle. This means that for shorter time periods—tens to a hundred thousand years—the temperature of Earth can vary. And, in fact, Earth swings between ice ages and warmer interglacial periods on these time scales. Parts of the carbon cycle may even amplify these short-term temperature changes.

Graph of oxygen isotope ratios in the deep ocean for the past 67 million years.

The global carbon cycle model describes the evolution of carbon mass in the mantle (Cm), the combined reservoir of ocean and atmosphere (Co+a), the continental crust (Cc), the ocean crust and floor (Cf), the kerogen (Cker), and the biosphere (Cbio).

Carbon on the dynamic planet can move from one of these realms to another as part of the carbon cycle.

Thus, above-mentioned are the steps involved in a carbon cycle.

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Answer:

letter A

Explanation:

because the story about the creation of the Maya Narration is discuss about the past world earth who there was no light,no electricity,no cellphone,no have technologies and it's silence after so many people have come and birth in the world,so many changes have done,we have now connection in our society in social and in reality,that ultimately is producing true,and enduring.

Genotype refers to the complete genetic make-up and can also be referred to as the alleles an organism carries on a particular gene.

John's genotype with unattached being dominant is Aa.

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Answer:

a genetic mutation passed on by one or two of their parents.

Explanation:

Answer:

During translation, the ribosome reads 3 letters at a time on the mRNA strand called a codon. The anticodons, which are connected to the amino acid, match up with the letters on the mRNA strand  

Explanation:

Answer:

Cellular respiration takes place in  the cells of fungi, animals, and plants.

Explanation:

Notice how these things are all living things. Cellular respiration is the process of turning glucose into ATP. This ATP is used for cellular functions and also to break down more glucose for more ATP. It is kind of like a circular process.

Hope this helps! Have a great day!

Answer:

you may need to fact check me

Explanation:

For more info you can check out the calvin cycle and Photosystem I & II Khan academy has great videos on this