Greenhouse Effect and Global Warming Questions and Answers – Page 2

Correct Answer: Option B — Carbon sink. Carbon sink is correct because it is forests, soils and oceans can function as sinks. Carbon sink is also associated with reduces the fraction of emissions remaining in the atmosphere. A further identifying fact is that Carbon sink is reduces the fraction of emissions remaining in the atmosphere. Another useful fact is that Carbon sink is associated with a sink can weaken if ecosystems are degraded. Why the other options are incorrect: Option A — Albedo: It is snow and ice generally have high albedo and is associated with ice loss exposes darker surfaces that absorb more heat. Option C — Paris Agreement: It is adopted in 2015 under the UNFCCC and is associated with aims to strengthen the global response to climate change. Option D — Carbon dioxide: It is released notably by fossil-fuel combustion and deforestation and is associated with the largest contributor to human-caused long-term warming. Exam Takeaway: Link Carbon sink with “forests, soils and oceans can function as sinks” and “reduces the fraction of emissions remaining in the atmosphere” for quick revision.

Correct Answer: Option A — Carbon sink. Carbon sink is correct because it is a reservoir that absorbs more carbon than it releases. Carbon sink is also associated with forests, soils and oceans can function as sinks. A further identifying fact is that Carbon sink is reduces the fraction of emissions remaining in the atmosphere. Another useful fact is that Carbon sink is associated with a sink can weaken if ecosystems are degraded. Why the other options are incorrect: Option B — Albedo: It is the fraction of incoming radiation reflected by a surface and is associated with snow and ice generally have high albedo. Option C — Paris Agreement: It is an international climate agreement and is associated with adopted in 2015 under the UNFCCC. Option D — Carbon dioxide: It is a long-lived greenhouse gas and is associated with released notably by fossil-fuel combustion and deforestation. Exam Takeaway: Link Carbon sink with “a reservoir that absorbs more carbon than it releases” and “forests, soils and oceans can function as sinks” for quick revision.

Correct Answer: Option D — Global warming. Global warming is correct because it is it is one component of broader climate change. Global warming is also associated with a long-term rise in Earth's average surface temperature. A further identifying fact is that Global warming is contributes to sea-level rise and changing climate extremes. Another useful fact is that Global warming is associated with it is one component of broader climate change. Why the other options are incorrect: Option A — Carbon sink: It is a sink can weaken if ecosystems are degraded and is associated with a reservoir that absorbs more carbon than it releases. Option B — Albedo: It is the ice-albedo feedback can amplify warming and is associated with the fraction of incoming radiation reflected by a surface. Option C — Paris Agreement: It is countries submit nationally determined contributions and is associated with an international climate agreement. Exam Takeaway: Link Global warming with “it is one component of broader climate change” and “a long-term rise in Earth's average surface temperature” for quick revision.

Correct Answer: Option C — Global warming. Global warming is correct because it is contributes to sea-level rise and changing climate extremes. Global warming is also associated with it is one component of broader climate change. A further identifying fact is that Global warming is contributes to sea-level rise and changing climate extremes. Another useful fact is that Global warming is associated with it is one component of broader climate change. Why the other options are incorrect: Option A — Carbon sink: It is reduces the fraction of emissions remaining in the atmosphere and is associated with a sink can weaken if ecosystems are degraded. Option B — Albedo: It is ice loss exposes darker surfaces that absorb more heat and is associated with the ice-albedo feedback can amplify warming. Option D — Paris Agreement: It is aims to strengthen the global response to climate change and is associated with countries submit nationally determined contributions. Exam Takeaway: Link Global warming with “contributes to sea-level rise and changing climate extremes” and “it is one component of broader climate change” for quick revision.

Correct Answer: Option B — Global warming. Global warming is correct because it is driven currently mainly by human greenhouse-gas emissions. Global warming is also associated with contributes to sea-level rise and changing climate extremes. A further identifying fact is that Global warming is contributes to sea-level rise and changing climate extremes. Another useful fact is that Global warming is associated with it is one component of broader climate change. Why the other options are incorrect: Option A — 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 C — Albedo: It is snow and ice generally have high albedo and is associated with ice loss exposes darker surfaces that absorb more heat. Option D — Paris Agreement: It is adopted in 2015 under the UNFCCC and is associated with aims to strengthen the global response to climate change. Exam Takeaway: Link Global warming with “driven currently mainly by human greenhouse-gas emissions” and “contributes to sea-level rise and changing climate extremes” for quick revision.

Correct Answer: Option A — Global warming. Global warming is correct because it is a long-term rise in Earth's average surface temperature. Global warming is also associated with driven currently mainly by human greenhouse-gas emissions. A further identifying fact is that Global warming is contributes to sea-level rise and changing climate extremes. Another useful fact is that Global warming is associated with it is one component of broader climate change. Why the other options are incorrect: Option B — Carbon sink: It is a reservoir that absorbs more carbon than it releases and is associated with forests, soils and oceans can function as sinks. Option C — Albedo: It is the fraction of incoming radiation reflected by a surface and is associated with snow and ice generally have high albedo. Option D — Paris Agreement: It is an international climate agreement and is associated with adopted in 2015 under the UNFCCC. Exam Takeaway: Link Global warming with “a long-term rise in Earth's average surface temperature” and “driven currently mainly by human greenhouse-gas emissions” for quick revision.

Correct Answer: Option D — Greenhouse effect. Greenhouse effect is correct because it is human emissions strengthen the natural effect. Greenhouse effect is also associated with a natural atmospheric warming process. 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 it is one component of broader climate change and is associated with a long-term rise in Earth's average surface temperature. Option B — Carbon sink: It is a sink can weaken if ecosystems are degraded and is associated with a reservoir that absorbs more carbon than it releases. Option C — Albedo: It is the ice-albedo feedback can amplify warming and is associated with the fraction of incoming radiation reflected by a surface. Exam Takeaway: Link Greenhouse effect with “human emissions strengthen the natural effect” and “a natural atmospheric warming process” for quick revision.

Correct Answer: Option C — Greenhouse effect. Greenhouse effect is correct because it is keeps Earth warm enough for life. Greenhouse effect is also associated with human emissions strengthen the natural effect. 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 contributes to sea-level rise and changing climate extremes and is associated with it is one component of broader climate change. Option B — Carbon sink: It is reduces the fraction of emissions remaining in the atmosphere and is associated with a sink can weaken if ecosystems are degraded. Option D — Albedo: It is ice loss exposes darker surfaces that absorb more heat and is associated with the ice-albedo feedback can amplify warming. Exam Takeaway: Link Greenhouse effect with “keeps Earth warm enough for life” and “human emissions strengthen the natural effect” for quick revision.

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.

Correct Answer: Option A — Greenhouse effect. Greenhouse effect is correct because it is a natural atmospheric warming process. Greenhouse effect is also associated with occurs when gases absorb and re-emit outgoing infrared radiation. 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 B — Global warming: It is a long-term rise in Earth's average surface temperature and is associated with driven currently mainly by human greenhouse-gas emissions. Option C — Carbon sink: It is a reservoir that absorbs more carbon than it releases and is associated with forests, soils and oceans can function as sinks. Option D — Albedo: It is the fraction of incoming radiation reflected by a surface and is associated with snow and ice generally have high albedo. Exam Takeaway: Link Greenhouse effect with “a natural atmospheric warming process” and “occurs when gases absorb and re-emit outgoing infrared radiation” for quick revision.