Marsha is driving 615 total miles on a trip. She has already driven of the distance. How far has Marsha driven? A. 123 miles

B. 307 1/2 miles

C. 369 miles

D. 246 miles

is should be y = 5x

step-by-step explanation:

correct me if im wrong

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.  

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step-by-step explanation: