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sophiegiu sophiegiu
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5 years ago
The figure above shows the geological times scale. Life has existed for ________ of the Earth's history.
A) about 1/2       B) about 1/4      C) all       D) about 9/10
Textbook 
The Essential Cosmic Perspective

The Essential Cosmic Perspective


Edition: 7th
Authors:
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jakannmjakannm
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Posts: 182
5 years ago
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sophiegiu Author
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5 years ago
Thanks for your help!!
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Yesterday
Thank you, thank you, thank you!
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2 hours ago
this is exactly what I needed
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