Suppose that the width of a certain rectangle is 1 inch more than one-fourth of its length. the perimeter of the rectangle is 42 inches. find the length and width of the rectangle.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

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.