What is the value of x ?

9°

Step-by-step explanation:

angle s is 90° since it angle made by diameter.

in triangle stu,

6x+36+90= 180°

6x= 54°

x= 54/6= 9°

if you have any doubt, please feel free to ask :-))

the discriminant is 64 + 4*1*12 = 112

this is prime.

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.