What is the sum of 3/8 and 1/16

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

i believe it's a.

i'm not sure on this one, most likely correct.