Find the area of the shaded sector of the circle.

196pi * 80/360 or ~136.8

Step-by-step explanation:

196pi * 80/360

or ~136.8

i used to know how to do this in 7th but i forget easily

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.