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The organisms that produced the oxygen gas in Earth's atmosphere in ancient times were A. heterotrophic eukaryotes. B. autotrophic eukaryotes. C. autotrophic prokaryotes. D. heterotrophic prokaryotes.
asked
Jan 4, 2017
Biology
high-school
1
answer
5
votes
121k
views
True or false 1) high resolution images show greater detail & more subtle color transition than low resolution images. 2 ) you can search for multiple words in the search text box by inserting commas between
asked
Feb 7, 2015
Computers & Tech
high-school
1
answer
5
votes
223k
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