how do I find the range with these numbers?

The numbers on the left side can represent the x axis. The y can be represented with the number in the right. As a result, if you graph each and every point, simply find the number per x that is the lowest and highest. Meaning, find the lowest and highest vertical point or just look at each number.

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.