A classmate stated, "A concave polygon be can be regular because it can have all sides congruent." Is this student's claim valid? Why or why not?

No.

Step-by-step explanation:

A regular polygon has all sides and angles congruent. This is not possible with a concave polygon. If the sides are congruent in a concave polygon the angles  are not congruent.

73.0769230769% of the games were won

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.