Which is true of the troposphere on Earth?
A) It is the lowest layer in the atmosphere, in which convection occurs.
B) It is the region of the atmosphere that absorbs ultraviolet light from the Sun.
C) It is the region of the atmosphere that absorbs x-rays from the Sun.
D) It is the highest layer in the atmosphere, marking the boundary with space.
A) It is the lowest layer in the atmosphere, in which convection occurs.
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A) 8,000 K B) 6,000 K C) 20,000 K D) 40,000 K
Foliation develops in metamorphic rocks when
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Why do scientists say that evolution is a "theory"?
A) because it explains a great deal about life and is supported by an enormous body of evidence B) because they are not very confident that it really happened C) because it's really just a guess about how life developed on Earth D) because it is supported by only a small amount of evidence
The United States is one of the least expensive places to build a power facility
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