A) Automobile exhaust fume
B) Industrial chimney
C) Mining
D) Wetland
Correct Answer: D
Solution :
The most significant natural sources of atmospheric methane are wetlands. Wetlands are characterized by waterlogged soils and distinctive communities of plant and animal species that have evolved and adapted to the constant presence of water. Due to this high level of water saturation as well as warm weather, wetlands are one of the most significant natural sources of atmospheric methane.
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