Which Greenhouse Effect and Global Warming term is correctly associated with important distinction or response: “forests and oceans absorb part of its emissions”, and also with “a long-lived greenhouse gas”?

Correct Answer: Option D — Carbon dioxide. Carbon dioxide is correct because it is forests and oceans absorb part of its emissions. Carbon dioxide is also associated with a long-lived greenhouse gas. 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 it is the main component of natural gas and is associated with a potent short-lived greenhouse gas. Option B — Nitrous oxide: It is it should not be confused with nitrogen dioxide and is associated with a long-lived greenhouse gas. Option C — Water vapour: It is warmer air can hold more moisture and is associated with the most abundant natural greenhouse gas. Exam Takeaway: Link Carbon dioxide with “forests and oceans absorb part of its emissions” and “a long-lived greenhouse gas” for quick revision.