Assume that is a positive acute angle.
Given: sin 0 =
53
Find: cos 20

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answer: 91

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.  

4+4+2x

or

2x+8

step-by-step explanation: