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Timeline > Billions Of Years Ago > Flashcards

Billions Of Years Ago Flashcards

1
Q

Milky Way formed

A

9 BYA

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2
Q

Solar system formed

A

4.5 BYA

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3
Q

Oldest rocks on earth

A

4.0 BYA

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4
Q

Life on earth begins

A

3.8 BYA

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5
Q

Photosynthesis

A

3.0 BYA

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6
Q

Oxygenation of the atmosphere

A

2.4 BYA

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7
Q

Huronian Ice Age

A

First known ice age

2.4 BYA

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8
Q

First multicellular life

A

1.5 BYA

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9
Q

Big Bang

A

13.7 BYA

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Timeline (2 decks)

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