Aradio station broadcasts a signal over qn area with a radius of 50 miles. the station can relay the signal and broadcast over an area with a radius of 75 miles. how much greater is the area of the broadcast region when the signal is relayed? round your answer to tje nearest sqaure mile

69

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.