asked 213k views
0 votes
Banded iron formations were caused by the production of which atmospheric gas?

A argon
B Oxygen
C helium
D water vapor

2 Answers

4 votes
C
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answered
User SQDK
by
7.7k points
2 votes

Answer:

C

Step-by-step explanation:

answered
User CTOMarc
by
8.0k points
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