Answer correctly for < 3 (11 and 12)

11. Solve for h by cross-multiplying. h = -1

12. C. is the answer because there were 9 equal rows but had 3 chair left over.

its 8

step-by-step explanation:

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.