What is the residence time of oxygen in the Earth's atmosphere?
A) 10 years
B) 100 years
C) 500 years
D) 5000 years
Correct Answer:
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Q15: Methane:
A)is a permanent gas.
B)is a good reflector
Q16: Carbon dioxide is an important variable gas
Q17: Ozone:
A)absorbs ultraviolet light.
B)typically reaches its greatest concentrations
Q18: The atmosphere is a mixture of:
A)precipitation and
Q19: Ozone depletion:
A)is highest over the Arctic.
B)occurs in
Q21: The average length of time that individual
Q22: The ozone layer:
A)is in the troposphere.
B)is composed
Q23: Which of the following gases is crucial
Q24: The troposphere:
A)is thinnest at the tropics.
B)maintains a
Q25: The stratosphere:
A)is part of the heterosphere.
B)has a
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