Multiple Choice
Imagine that you built a time machine and successfully traveled 2 billion years back in time. What would you observe, given our current understanding of Earth's history?
A) dinosaurs roaming Earth
B) forests and insects everywhere on Earth
C) the ongoing heavy bombardment of Earth
D) a severe scarcity of oxygen in the atmosphere
E) You would be floating in space because Earth hadn't formed yet.
Correct Answer:
Verified
Correct Answer:
Verified
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