Moderate
The maximum CO2 is emitted into the atmosphere by_________________?
Correct answer: A. Combustion
- A. Combustion
- B. Urea
- C. Biomass burning
- D. Trees
Explanation
Combustion converts carbon in fuels into carbon dioxide and is the largest broad source among the listed choices. Urea and trees are not normally the maximum direct emitters, although biomass burning is itself a type of combustion.
Written and checked by Zahid Hussain, MS Computer ScienceLast updated
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