Which products result in a difference of squares or a perfect square trinomial? Check all that apply. (5x+3)(5r-3)
(Tx + 4)(7x + 4)
(2x + 1)(x + 2)
(4x-6)(x+8)
(x-9)(x-9)
0 (-3r-6)(-3r+6)

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.  

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step-by-step explanation:

final total: 63

step-by-step explanation:

60 times sales tax

60 times 0.05

3

60 + 3

63