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Which compound was abundant in Precambrian Earth’s oceans, before complex life evolved on Earth?

A.
dissolved oxygen
B.
dissolved carbon dioxide
C.
dissolved methane
D.
dissolved ammonia

2 Answers

3 votes

Answer:

B. Dissolved carbon dioxide

Step-by-step explanation:

Plato answer

User Adadion
by
8.4k points
5 votes

Answer:

Dissolved carbon dioxide

Step-by-step explanation:

Just took the test and it was correct

User Extols
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