history of life Flashcards by stephbeff t. | Brainscape

Q

age of earth

A

4.6 billionyears

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Q

first prokaryotes

A

3.5 billyago

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Q

first eukaryotes

A

2.8 bya

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Q

precambrian time period

A

4.6 bya to 570 mya

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Q

paleozoic time period

A

570mya to 225 mya

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Q

mesozoic time period

A

225 mya to 65 mya

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Q

cenozoic time period

A

65mya to now

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Q

precambrian life

A

primitive life first invertebrates

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Q

paleozoic life

A

aquatic life \
1st plants
1st fishes

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Q

oxyfen rovolution

A

paleozoic=1 st plants

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Q

mesozoic life

A

dinosaurs

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Q

cenozoic life

A

humans and primates

mammals

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Q

precambrian extinction

A

cambrian explosion

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Q

paleozoic extinction

A

purmian extinction

and plate techtonics

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Q

mesozoic extinction

A

KT asteroid

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Q

how earth was created

A

bigbang theory