Niles Eldredge and Stephen Jay Gould argue that evolution is characterized by long periods of relative stability that are: A. the essence of gradual evolution. B. punctuated by sudden changes. C. exactly like Darwin ropose D. only changed very slowly.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

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the answer is otpion c) understanding

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2%? i tried finding the exact sorry if it's not 100% correct ; -;