Find the measure of angle b.

question 1 options:
90
180
120
60

find the length of segment bc.

question 2 options:
163.3
128.6
84.7
59.8

find the length of segment ba.

question 3 options:
163.3
128.6
84.7
59.8

It could be 180 but then idk if it needs a picture because I don’t see it

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.  

won't that be plagrisim thought?

step-by-step explanation: