Is (10,-2) a solution of the system x−6y>5 7x+2y≥4

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.  

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

b.   e = 7.5h

hope this , lovely!