Grayson evaluated 4x2 + 2y for x = 3 and y = 2. 4x2 + 2y = 4(3)2 + 2(2)
122 + 2(2)
144 + (4)
148
What error did Grayson make?

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.