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Match the Organism to the Time Frame That Indicates When

Question 40

Matching

Match the organism to the time frame that indicates when we first see fossil evidence this form existed.

Premises:

Responses:

First anaerobic heterotrophs

540 million years ago

First animals with calcium skeletons and shells

2.6 billion years ago

Oxygen-producing photosynthesizers

400 million years ago

First multicellular organisms

900 million years ago

First land forms

2.1 billion years ago

Eukaryotes

3.8 billion years ago

580 million years ago

Premises:

First anaerobic heterotrophs

First animals with calcium skeletons and shells

Oxygen-producing photosynthesizers

First multicellular organisms

First land forms

Eukaryotes

Responses:

540 million years ago

2.6 billion years ago

400 million years ago

900 million years ago

2.1 billion years ago

3.8 billion years ago

580 million years ago

Correct Answer:

Premises:

Responses:

540 million years ago

2.6 billion years ago

400 million years ago

900 million years ago

2.1 billion years ago

3.8 billion years ago

580 million years ago

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