To an order of magnitude, how many piano tuners are in new york city? the physicist enrico fermi was famous for asking questions like this on oral ph. d. qualifying examinations. his own facility in making order of magnitude calculations is exemplified in problem 45.48. (explain what values you are using to make your estimate.)

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2

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.