Y= x-8 y=-4 what is the value of x?

4

Step-by-step explanation:

y=x-8 y=-4

-4=x-8

8-4=x

4=x

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.  

answer: no

step-by-step explanation: because the big angle will spread away the 2 side that it is on and make the opposite side even longer.