How much has the value of y changed between the points (-8, 4) and (8, -4)? A 1/2 units
B 2 units
C. 8 units
D 16 units

The answer is I think B

Step-by-step explanation:

I just took the test

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.