I need help this is a science question and not a bio and its a one answer question

C rainforest always have the most biodiversity

Explanation:

Hope this helps!

I belive its A

Explanation:

Population-based genomic among african populations , found significant diversity in the genetic makeup of a population from the southern region for the African continent.

                                    Dis Better hav help

                        My brain... ;^;

d. sodium chloride ions.