AP Environmental Science Quiz
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LAND AND WATER USE
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A study compares methane and CO
2
_2
2
; why is methane from cattle considered a potent climate forcer?
A
Methane has a higher global warming potential than CO
2
_2
2
over decades, absorbing infrared radiation more effectively per molecule.
B
Methane is heavier than air, so it forms a permanent layer that blocks sunlight and cools Earth's surface strongly.
C
Methane destroys oxygen, so it reduces atmospheric O
2
_2
2
and causes warming by increasing combustion rates worldwide.
D
Methane is radioactive, so it directly adds heat through decay energy rather than greenhouse absorption mechanisms.
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