Jack paid $6 for 4 apples. if he only bought one apple what would be an equivalent ratio of dollars to apple?

$1.50 per apple.

Step-by-step explanation:

6 divide by 4 is $1.50 which is per apple

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.