7. Compares after-tax income to the money people spend on a variety of items.
A. Interest rate
B. Savings rate

what does muffins have to do with anything?

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.  

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !