Mann middle school has 1,000 students, 40 teachers, and 5 administrators. if the school grows to 1,200 students and the ratios are maintained, fine the number of administrators that will be needed.

50

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.