1. The stem and leaf plot gives the agesof the last 15 presidents when they were inaugurated Table 1: Key:3j5 = 35 Stem Leaf 4 3 6 7 5 1 2 4 4 5 6 6 0 1 2 4 9 7 0

answer: 34rtyj,jkhtyetwrhyjeuiejnbhdfknbkguxfrbhkfdbjvkmbd,kvbsd.kxjvbhjnfbgjxdfn

step-by-step explanation:

a is the right answer

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.