AO ⊥ (BCD)
OB = OC = OD = 12
m∠ACO = 20º
BD = CD = BC
Find: V and Surface Area of a triangular pyramid

V = 272.3 cube units

The surface area is 418.34 square units

d

gimmee one of those gold crowns!

~coco

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.