Which Greenhouse Effect and Global Warming term is correctly associated with major source or process: “occurs when gases absorb and re-emit outgoing infrared radiation”, and also with “keeps Earth warm enough for life”?

Correct Answer: Option B — Greenhouse effect. Greenhouse effect is correct because it is occurs when gases absorb and re-emit outgoing infrared radiation. Greenhouse effect is also associated with keeps Earth warm enough for life. A further identifying fact is that Greenhouse effect is keeps Earth warm enough for life. Another useful fact is that Greenhouse effect is associated with human emissions strengthen the natural effect. Why the other options are incorrect: Option A — Global warming: It is driven currently mainly by human greenhouse-gas emissions and is associated with contributes to sea-level rise and changing climate extremes. Option C — Carbon sink: It is forests, soils and oceans can function as sinks and is associated with reduces the fraction of emissions remaining in the atmosphere. Option D — Albedo: It is snow and ice generally have high albedo and is associated with ice loss exposes darker surfaces that absorb more heat. Exam Takeaway: Link Greenhouse effect with “occurs when gases absorb and re-emit outgoing infrared radiation” and “keeps Earth warm enough for life” for quick revision.