Heyy there.
I'm thinking that it would be B. or D. but idk exactly which one it is.
I hope you figure out wat it is.
B. Thinnest under the oceans and thickest under continents
D. Least dense layer overall, consists of two layers of different thickness
Good Luck and enjoy the rest of ur day!! ^^
D.Gene Flow or B.Genetic Drift! Because most of the time, its genetics or genes!
The answer for the first one is A and the second one is also A
<span> Endoplasmic Reticula should be the answer but if it is not my apologies </span>