What is the value of 7p5?

a.5040
b.2520
c.42
d.21

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

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.