Why was the impact 65 million years ago a chance happening that benefited the evolution of humans?
A) It deposited a significant amount of nitrogen into Earth's atmosphere.
B) It led to an increase in global UV radiation, which killed off most of the forests and jungles.
C) Mammals got an evolutionary boost.
D) Plant life began to decline.
Correct Answer:
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Q5: What occurred approximately 500 million years ago?
A)
Q7: All terrestrial life is _-based.
A) carbon
B) hydrogen
C)
Q8: Which of the following is the study
Q9: If we model the history of Earth
Q11: Complex microorganisms that have complex DNA enclosed
Q11: Terrestrial life is carbon-based and requires _
Q12: Venus and Mars have little free oxygen
Q14: If we model the history of Earth
Q15: The early Earth suffered a long period
Q26: Which one of the following is NOT
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