3. what is the area of a square with length (a + b). write your answer as an
expression of a and b.

=a^2+2ab+b^2

Step-by-step explanation:

Since a square has all equal sides then you can write the equation as:

(a+b)^2= Write it as (a+b)*(a+b)

Next distribute

a^2+ab+ab+b^2

Add together to get

A^2+2AB+B^2

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.