Answer:
Stabilizing selection
Explanation:
Stabilizing selection is the most common form of natural selection that is not easy to notice in a population as the change is less drastic. It occurs when average or intermediate phenotypes of a trait in a population are favored, while the extreme phenotypes of that trait are not favored by the forces of natural selection. Over time, intermediate or non-extreme traits become more common in the population, while extreme traits become less common.
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<u>The answer is</u>
to convert millimeters into kilometers
Antoine should divide millimeters by 
Make the mussels all the same size (medium)! :)
The mitochondrion (plural mitochondria) is a organelle found in most eukaryotic cells.
I'm not sure what you're asking, but if you're looking for a word to describe this change its "mutation"