Robert sees a bird sitting on top of a telephone pole. He estimates the angle of elevation to the top of the pole to be 55°. If he is
standing 10 feet from the base of the pole, about how tall is the telephone pole? (Assume the pole meets the ground at a right
angle.
A. 8 feet
B. 6 feet
C. 1 7 feet
D.14 feet

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.