The largest reservoir of methane is found
A) trapped under permafrost and marine sediments.
B) in the rumen of cows and other ruminant animals.
C) in the atmosphere.
D) trapped in volcanic rocks.

Question

Quizplus · Accepted Answer

Methane is primarily found in permafrost and marine sediments, where it can become trapped for long periods of time. Methane is also produced by ruminant animals, but this source is relatively small in comparison to the amount trapped in sedimentary deposits. Methane is not found in significant quantities in the atmosphere or volcanic rocks.

The Largest Reservoir of Methane Is Found