What is biogeography and what does it provide?

Answers

Answer 1

Answer: Biogeography- it is the geographic location and distribution of living organisms.
It provide evolution in many ways because organisms are not distributed evenly throughout the world, but related organisms are found in the same isolated parts of the world and this is not explained by climate.

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Three sources of genetic variation are

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THe 3 sources of genetic variation are the following
- mutation - the changing of DNA Structure
- Lateral gene transfer - the movement of genetic material into unicellar genes.
- genetic recombination during sexual reproduction

Three sources of genetic variation are mutation, recombination and gene flow.

What is genetic variation?

Genetic variation is the differences in the genetic makeup of individuals within a population.

The sources of genetic variation are;

Mutation: Mutations are random changes that occur in an organism's DNA sequence.

Recombination: Recombination occurs during meiosis, the process by which gametes (e.g., sperm and egg cells) are formed.

Gene Flow: Gene flow refers to the movement of genes between populations. This occurs when individuals from different populations interbreed and exchange genetic material.

Learn more about genetic variation here: brainly.com/question/23840938

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The fibrous outer layer of the eye which retains the overall shape of the eye is the _____. sclera cornea aqueous humor iris

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The best answer is Sclera.The sclera is the tough outer coat of the eye that covers the eyeball except for the cornea. It is a tough opaque tissue that serves as the protective outermost coat of the eye and provides structure and strength to the eye.It is also known as the white of the eye.Attached to the sclera, are six small muscles that control the movement of the eye.In elderly people, the sclera may appear yellow in color.

the sclrea. hope it helps.

Plz Help Me Will make brainliest if got it right!!!

Answers

Answer:

Sorry if I'm wrong but I think it's B

Explanation:

A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.

It’s b I had to do a project on the same bottle neck topic

Cell membranes are often called a "fluid mosaic" of lipids and proteins. What is the role of the cell membrane structures? Structurally support the cell Store nutrients for the cell to consume Produce ATP to provide energy for the cell Selectively allow some materials into the cell

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A .Structurally support the cell
B.Store nutrients for the cell to consume
C. Produce ATP to provide energy for the cell
D. Selectively allow some materials into the cell

It would be A

The Cell membrane is like a wall it allows things to pass though regulated.

Hope that helps

Which statement regarding genes and evolution is true?A. If an organism has a mutation, it will be less "fit" (less able to reproduce) than other organisms.
B. Today's plethora of microorganisms is the result of an extremely brief period of genetic recombination events.
C. Mutations function to prevent the offspring of an organism from evolving.
D. Random, heritable genetic mutations are a source of genetic variation. This variation is necessary for natural selection to occur.

Answers

The statement which is true regarding genes and evolution is as follows:

Random, heritable genetic mutations are a source of genetic variation. This variation is necessary for natural selection to occur.

Thus, the correct option is D.

What is Genetic mutation?

Genetic mutation may be defined as sudden, stable, and inheritable alterations in the genetic material of an organism. It is considered one of the most useful events for evolution to occur.

Random mutation takes time but they are the least effective and non-influential. Such type of mutations are easily heritable and induces genetic variation among individuals of the same species.

As a result of this, as time passes such mutations become a base for natural selection to occur and allow the favorable variation to survive and reproduce effectively.

Therefore, the correct option for this question is D.

To learn more about Genetic mutations, refer to the link:

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Answer:

the answer is D! :)

Explanation:

What information can be determined by observing dark lines within the spectrum of a given star? the elements present in the star's atmosphere the elements present in the star's inner core whether planets orbit the star the approximate size of the star

Answers

The information that can be determined by observing dark lines within the spectrum of a given star includes "the approximate size of the star" since the other options are unknown.

Answer:

the elements present in the star's atmosphere

Explanation:

The spectrum showing dark lines is an absorption spectrum. The dark lines actually indicated the energy absorbed by the elements present in the atmosphere of the star.

The elements absorb particular wavelengths and reach higher energy state. The absorbed wavelengths appear as dark lines in the spectrum.

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The coast of California on the western side of the state has a moist climate, while the eastern side is a desert. What could cause this difference? A. Cool winds cannot blow across a large lake into the desert. B. Mountains prevent moist air from blowing over into the desert. C. The west side is closer to the equator than the east. D. California has experienced a drastic climate change in the past few years.

Anna is observing slides of unlabeled organisms. The organisms are unicellular, have delicate glass-like cell walls with sculpturing, and show all the cell organelles, including chloroplasts. Which organism is she observing? Euglenophytes Dinoflagellates Diatoms