Which Greenhouse Effect and Global Warming term is correctly associated with climate significance: “the largest contributor to human-caused long-term warming”, and also with “forests and oceans absorb part of its emissions”?

Correct Answer: Option C — Carbon dioxide. Carbon dioxide is correct because it is the largest contributor to human-caused long-term warming. Carbon dioxide is also associated with forests and oceans absorb part of its emissions. A further identifying fact is that Carbon dioxide is the largest contributor to human-caused long-term warming. Another useful fact is that Carbon dioxide is associated with forests and oceans absorb part of its emissions. Why the other options are incorrect: Option A — Methane: It is warms more strongly per molecule than carbon dioxide over shorter periods and is associated with it is the main component of natural gas. Option B — Nitrous oxide: It is also contributes to stratospheric ozone depletion and is associated with it should not be confused with nitrogen dioxide. Option D — 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. Exam Takeaway: Link Carbon dioxide with “the largest contributor to human-caused long-term warming” and “forests and oceans absorb part of its emissions” for quick revision.