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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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smcc617 smcc617
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6 years ago

The three eras that have taken place since the end of the Precambrian from oldest to youngest are the
  ____________________, ____________________, and ____________________. Fill in the blank(s) with the appropriate word(s).




Q. 2 -

The two primary materials that geologists use as clues to understand Earth's past are
  ____________________ and ____________________. Fill in the blank(s) with the appropriate word(s).




Q. 3 - The two types of crust are ____________________ and ____________________. Fill in the blank(s) with the appropriate word(s).


Q. 4 - The crust and the underlying uppermost mantle make up the ____________________. Fill in the blank(s) with the appropriate word(s).


Q. 5 -

The material in Earth's inner core is ____________________, while the outer core is
  ____________________. Fill in the blank(s) with the appropriate word(s).
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renaatvdwrenaatvdw
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6 years ago
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smcc617 Author
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6 years ago
Good timing, thanks!
Danivalda
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Yesterday
Thanks
Lawson1981
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2 hours ago
Helped a lot
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