Punctuated equilibrium is a biological theory that regards evolution not as a gradual process by which one species slowly and continuously transforms into another, rather a process in which species were remaining stable for long periods and then have dramatic change in isolated short bursts.
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Arather a process in which species were remaining stable for long periods and then have dramatic change
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Bbut as a process in which species remain stable for long periods and change dramatically
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Cbut a process in which species remain stable for long periods and then have dramatic change
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Dbut as a process in which species remained stable for long periods and changing dramatically
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Ebut also as a process in which species were remaining stable for long periods and were changing dramatically
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正确答案: B