Paper 1 · People, Development and Environment
Landfill gas is a natural by-product of the decomposition of organic material in landfills. This gas consists of
AAlmost 50 percent methane as the primary component
BAlmost 50 percent carbon dioxide
CA small amount of non-methane organic compounds
DAll of the above ✓ Correct
Correct answer: (D) All of the above — Landfill gas consists of all of these, so the answer is all of the above.
Explanation
★Landfill gas consists of all of these, so the answer is all of the above.
★It is about half methane, its main component.
★It is also about half carbon dioxide.
★It carries a small amount of non-methane organic compounds too.
★So all three descriptions are part of landfill gas.
★So the answer is all of the above.
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