Which Greenhouse Effect and Global Warming term is correctly associated with climate significance: “warms more strongly per molecule than carbon dioxide over shorter periods”, and also with “it is the main component of natural gas”?

Correct Answer: Option C — Methane. Methane is correct because it is warms more strongly per molecule than carbon dioxide over shorter periods. Methane is also associated with it is the main component of natural gas. A further identifying fact is that Methane is warms more strongly per molecule than carbon dioxide over shorter periods. Another useful fact is that Methane is associated with it is the main component of natural gas. Why the other options are incorrect: Option A — Nitrous oxide: It is also contributes to stratospheric ozone depletion and is associated with it should not be confused with nitrogen dioxide. Option B — Water vapour: It is acts mainly as a climate feedback rather than the initial human forcing and is associated with warmer air can hold more moisture. Option D — Tropospheric ozone: It is contributes to warming near Earth's surface and is associated with it should not be confused with protective stratospheric ozone. Exam Takeaway: Link Methane with “warms more strongly per molecule than carbon dioxide over shorter periods” and “it is the main component of natural gas” for quick revision.