Simplify to create an equivalent expression

-r + 8(-5r -2).

Multiply 8 by -5r - 2

- r - 40r - 16.

Combine -r and -40r

-41r - 16 is a simplified equivalent expression of -r + 8(-5r - 2)

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.