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Unit 4 · Evolution

Theory of Evolution Presentation

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Science, Class 9 · Unit 4

Theory of Evolution

Lamarck and Darwin · 1809 and 1859 · Natural selection

Today's Objectives

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State Lamarck's theory in three points

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Explain the giraffe's neck through both theories

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Explain Darwin's five concepts

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Point out the weaknesses of both theories

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Presenter notes: Today we study the two great theories that try to answer how evolution happens. We have already seen the evidence that evolution happened; today we ask how.