Multiple Choice
About 3.5 billion years ago when life first started to develop, the atmosphere of the earth was likely to have
A) been an oxidising atmosphere.
B) had low levels of UV light.
C) had little ozone.
D) been aerobic.
E) only low levels of oxygen.
Correct Answer:
Verified
Correct Answer:
Verified
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Q37: Which of the following statements about bacteria
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