Earth's primitive atmosphere evolved from gases ______.
A) expelled from within the earth
B) from the Sun
C) collected from the nebula
D) escaping from water
E) produced by radioactive decay
Correct Answer:
Verified
Q20: Earth's core, mantle, and crust formed during
Q21: Much of the early hydrogen and helium
Q22: The Great Oxygen Event marks the time,
Q23: The modern oceans are a major repository
Q24: In the early history of Earth, the
Q26: The process in which plants use light
Q27: Antarctica became glaciated because_ .
A) ocean circulation
Q28: The first bacteria probably used_ instead of
Q29: The major source of free oxygen in
Q30: According to your text, which type of
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