_____________ consists of small changes over dramatically long periods of time, slowly adding up to significant change and, potentially, to speciation.

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Phyletic gradualism is the concept that describes evolution as occurring through a series of small, incremental changes over long periods of time. This contrasts with punctuated equilibrium, which suggests that species remain relatively unchanged for long periods, with significant evolutionary changes occurring in relatively short, intense bursts.

_____________ Consists of Small Changes Over Dramatically Long Periods of Time