Which Greenhouse Effect and Global Warming term is correctly associated with type or identity: “a long-lived greenhouse gas”, and also with “strongly linked to agricultural soils and nitrogen fertilisers”?

Correct Answer: Option A — Nitrous oxide. Nitrous oxide is correct because it is a long-lived greenhouse gas. Nitrous oxide is also associated with strongly linked to agricultural soils and nitrogen fertilisers. A further identifying fact is that Nitrous oxide is also contributes to stratospheric ozone depletion. Another useful fact is that Nitrous oxide is associated with it should not be confused with nitrogen dioxide. Why the other options are incorrect: Option B — Water vapour: It is the most abundant natural greenhouse gas and is associated with enters the atmosphere mainly through evaporation. Option C — Tropospheric ozone: It is a secondary air pollutant and greenhouse gas and is associated with formed by sunlight-driven reactions involving precursor pollutants. Option D — Greenhouse effect: It is a natural atmospheric warming process and is associated with occurs when gases absorb and re-emit outgoing infrared radiation. Exam Takeaway: Link Nitrous oxide with “a long-lived greenhouse gas” and “strongly linked to agricultural soils and nitrogen fertilisers” for quick revision.