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Mathematics 11 Online
OpenStudy (anonymous):

The hypothesis that evolution occurs at an irregular rate through geologic time is known as: directional evolution directional equilibrium punctuated equilibrium punctuated evolution

OpenStudy (anonymous):

punctuated equilibrium

Directrix (directrix):

Practice using this flash card site: http://quizlet.com/2428335/biology-final-exam-flash-cards/ Punctuated equilibrium is there along with related questions and answers.

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