Natural selection generally results in a) increased genetic variation b) a population that is better adapted to a future environment c) a population that is adapted to its current environment d) an increase in the size of a population

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.

i think the miocene epoch spans the time from 23 million to 12 million years ago.

answer: dna

because all cells have genes