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Ksju [112]
3 years ago
11

PLEASE HELP. I REALLY NEED THIS!!!!

Biology
1 answer:
Viefleur [7K]3 years ago
4 0

Answer:

In nature, populations are usually evolving. The grass in an open meadow, the wolves in a forest, and even the bacteria in a person's body are all natural populations. And all of these populations are likely to be evolving for at least some of their genes. Evolution is happening right here, right now!

To be clear, that doesn't mean these populations are marching towards some final state of perfection. All evolution means is that a population is changing in its genetic makeup over generations. And the changes may be subtle—for instance, in a wolf population, there might be a shift in the frequency of a gene variant for black rather than gray fur. Sometimes, this type of change is due to natural selection. Other times, it comes from migration of new organisms into the population, or from random events—the evolutionary "luck of the draw."

I hope this helps a little bit.

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Student B

Explanation:

<em>Student B's argument is the best argument out of the four students's argument.</em>

<u>A new island formed as a result of volcanic eruption will have to undergo processes that will enable its colonization by living organisms - a form of primary succession. The living organisms that will colonize the newly formed island are referred to as pioneer species.</u>

Generally, succession represents a gradual change in the species structure of a community over a period of time. Sometimes, this change can take thousands of years as some species keep getting replaced by another species till a relatively stable community (climax community) is reached.

Succession that happens when an area that has not held any form of life before is colonized by life is known as primary succession.

When an area that holds different species of living organisms undergo a period of disturbance to its structure, it tries to adjust itself over time and the kind of succession that takes place is known as secondary succession.

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