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In a few generations, this population of beetles changed.

Which is the most likely explanation for the change?
The beetle population moved to a greener habitat.
A natural disaster almost caused the extinction of the population.
The beetle population’s food sources decreased dramatically.
A mutation resulted in a new color of insect.

In a few generations, this population of beetles changed.  Because:

The beetle population moved to a greener habitat.

Explanation:

The reason behind the answer is that adaptation as an evolution process will always make the best-suited survivors inherit the traits their parents had. Because those are the ones that allowed them to increase their chances to survive. Therefore, the morphology changes and the animals that have traits that match their environments will have more chances to survive than those that don't have traits that match their environment.

answer; the above statement is (true);

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest