Which possible consequence of global warming represents a negative feedback loop?
A) Methane may be released from natural wetlands with rising carbon dioxide.
B) Methane may be rapidly oxidized by bacteria in tundra soils.
C) Methane may be released as permafrost melts in the arctic tundra.
D) Methane may be released from oceanic mud as ocean waters warm.

Question

Which possible consequence of global warming represents a negative feedback loop? 
A) Methane may be released from natural wetlands with rising carbon dioxide. 
B) Methane may be rapidly oxidized by bacteria in tundra soils. 
C) Methane may be released as permafrost melts in the arctic tundra. 
D) Methane may be released from oceanic mud as ocean waters warm.

Quizplus · Accepted Answer

Methane being rapidly oxidized by bacteria in tundra soils represents a negative feedback loop as it removes methane from the atmosphere, reducing its greenhouse effect and mitigating global warming. This is different from the other options, where methane is released into the atmosphere, contributing to global warming.

Which Possible Consequence of Global Warming Represents a Negative Feedback