5. nina has x coins. clayton has 9 more than three times the amount that nina has. write a
simplified expression for the total number of coins nina and clayton have altogether.
answer plz

after simplifying it i got: -36.25 as my answer. hope that !

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.  

it would open into a square depending on the type of envelope i’m not sure about the second part