Explanation:
Basically, what you need to do is use a term for each one of the circles so it is even and if you look at the explanation(above or below it) it will match the definition of the term you provided. I'm guessing tho.
Variation: When one of that species develops another trait or skill that the others do not have.
Adaptation: When a species changes in order to survive a certain place or survive a predator
I think it’s B.heating and cooling it is used over 40%
I know some of them.
For instance, blood cells, nerve cells, sperm cells, and egg cells.