Which of the Following are Natural Sources of Methane

Question

Which of the following are natural sources of methane?
A) Oceans
B) Wetlands and lakes
C) Ancient geological formations
D) Bacteria that oxidize organic carbon to carbon dioxide

Accepted Answer

Methane is naturally emitted from oceans, wetlands, and lakes due to microbial activity and decomposition of organic matter. Ancient geological formations can also release methane that has been trapped for millions of years.