Which of the following gases is most efficient at trapping atmospheric heat?
A) carbon dioxide (CO₂)
B) nitrogen trifluoride (NF₃)
C) water (H₂O)
D) methane (CH₄)
Correct Answer:
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Q75: The ultimate source of radon in the
Q76: Ozone (O₃)and oxygen (O₂)are
A)allotropes.
B)similar in reactivity.
C)isomers.
D)liquids at
Q77: Ozone is a very strong
A)acid.
B)base.
C)oxidizing agent.
D)reducing agent.
Q78: The two principal sources of acid rain
Q79: Urban smog contains several air pollutants,including ozone.For
Q81: The World Health Organization (WHO)rates which pollutant
Q82: The ozone layer over Antarctica is its
Q83: The World Health Organization estimates that over
Q84: Which is classified as a "greenhouse gas"?
A)helium
B)oxygen
C)iodine
D)nitrous
Q85: The major source of all air pollutants
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