An “a” train leaves a subway station every 12 minutes. an “e” train leaves every 9 minutes. if both trains just left the station on parallel tracks, when will both leave the station together again?
a. in 108 minutes
b. in 36 minutes
c. in 72 minutes
d. in 24 minutes

B. In 36 minutes because 12×3=36 and 9×4=36 and this is the first number they share.

answer: the first graph

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.