HELPPP ME PLEASE 20 points

- 12

Step-by-step explanation:

substitute the given values into the expression

a - 4c

= - 4 - 4(2)

= - 4 - 8

= - 12

Answer : -12

◊ YusuCr ◊

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

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.