Simplify each expression by combining like terms.
8t + 6t +7y

Plzzz helppp :((

Hi,

8t + 6t + 7y = (8 + 6)t + 7y = 14t + 7y.

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:

a=9

step-by-step explanation: lmk if you need a explanation