Answer: Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... Directional selection does the “heavy lifting” of evolution by tending to move the trait mean toward the optimum for the environment.
Answer:
Its B I think (I'm not 100% sure)
Explanation:
It may diminish the water supply because not as much water is being added.
Answer:
I think its bone, air and hence
Explanation:
There doesn't seem to be a maximum number. Ultra high molecular weight polyethylene has around 500 thousand carbons that are linked together.