PLEASE EXPLAIN YOUR ANSWER
which is correct:
a. heterotrophic eukaryotes.
b. autotrophic eukaryotes.
c. autotrophic prokaryotes.
d. heterotrophic prokaryotes.
e. completely unlike modern organisms.
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12-06-2011, 03:43 PM #1
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The organisms that produced the oxygen gas in Earth's atmosphere in ancient times were?
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