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Home Q & A Board Science-Related Homework Help Physics Astronomy
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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
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jakannmjakannm
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5 years ago
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sophiegiu Author
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5 years ago
You make an excellent tutor!
Shuqin
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Yesterday
Good timing, thanks!
lubennick
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2 hours ago
This helped my grade so much Perfect
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