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Author Question: The first cells must have been simple, single-celled organisms similar to modern _______________. ... (Read 98 times)

Mimi

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on: Jul 27, 2018
The first cells must have been simple, single-celled organisms similar to modern _______________.
 
  Fill in the blank(s) with correct word

Question 2

_______________ are fossilized remains of colonies of single-celled organisms that built up layer after layer of trapped sediments.
 
  Fill in the blank(s) with correct word


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mirabriestensky

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Reply #1 on: Jul 27, 2018
Answer to Question 1

bacteria

Answer to Question 2

Stromatolites


Mimi

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

isabelt_18

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Reply 3 on: Yesterday
Gracias!

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