Suppose that a varies directly with b and inversely with the product cd. a=15 when b=50, c=2, and d=5. Write the equation that models the relationship. A. a=9/bcd
B. a=3cd/b
C. a=b/9c •d
D. a=3b/cd
PLEASE ANSWER I HAVE TO SUBMIT SOON

the correct answer is a.) bc< mn 5 stars if this you : )

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.  

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step-by-step explanation: