Arectangle has a height of 4 and a width of x^3+3x^2+2x

What are you trying to find? The area of the rectangle?

Step-by-step explanation:

Area of rectangle is height x width

So you multiply 4 by (X^3 + 3X^2 + 2X)

You multiply only the coefficients

So you get

4X^3 + 12X^2 + 8X

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.