Find the exact value of cos A in simplest radical form.
B
41
40
с
A
9 A

avhfegwh

Step-by-step explanation:

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64

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.