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nsdq007 nsdq007
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2 weeks ago
The first complex life appeared on Earth about 0.5 billion years ago. What period was that?


the Jurassic Period



the Cambrian Period



the Precambrian Period



the Neolithic Period

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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shanej399shanej399
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2 weeks ago
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nsdq007 Author
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2 weeks ago
Smart ... Thanks!
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Thanks
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Just got PERFECT on my quiz
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