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bio exam 2 > Chapter 10: key events in life's history TIMELINE > Flashcards

Chapter 10: key events in life's history TIMELINE Flashcards

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Biology 101 flashcards
1
Q

What happened 3.5 billion years ago?

A

first prokaryotes (single celled)

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2
Q

What happened 4.5 billion years ago?

A

origin of universe

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3
Q

what happened 2.6-2.2 billion years ago?

A

atmospheric oxygen (oxygen revolution)

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4
Q

what happened 2.1 bya?

A

first eukaryotes, single celled

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5
Q

what happened 1.2 bya?

A

first multicellular eukaryotes

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6
Q

what happened 535-525 million years ago?

A

cambrian explosion, great increase in diversity of animal forms

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7
Q

what happened 500 mya?

A

colonization of land by fungi, plants and animals

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8
Q
A
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bio exam 2 (5 decks)

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