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Evolution McIlvaine

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Jeff McIlvaine

on 9 December 2013

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Transcript of Evolution McIlvaine

The development of organisms from preexisting organisms over time
Before Darwin
Scientists used to believe
all species were were
permanent and unchanging
They also believed that the Earth
was only thousands of years old
A cheetah today
Is exactly the same
as a cheetah from the beginning of time
What's the problem?
Georges Cuvier studied fossils found
in Rock Strata
He found that many species were
very different from any living species
Even some are EXTINCT
Jean Baptiste Lamarck
Proposed that organisms
inherit acquired characteristics
Lemarck was on the right track
Full transcript