Greenhouse Effect and Global Warming Questions and Answers – Page 3

Correct Answer: Option D — Tropospheric ozone. Tropospheric ozone is correct because it is it should not be confused with protective stratospheric ozone. Tropospheric ozone is also associated with a secondary air pollutant and greenhouse gas. A further identifying fact is that Tropospheric ozone is contributes to warming near Earth's surface. Another useful fact is that Tropospheric ozone is associated with it should not be confused with protective stratospheric ozone. Why the other options are incorrect: Option A — Greenhouse effect: It is human emissions strengthen the natural effect and is associated with a natural atmospheric warming process. Option B — 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 C — 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. Exam Takeaway: Link Tropospheric ozone with “it should not be confused with protective stratospheric ozone” and “a secondary air pollutant and greenhouse gas” for quick revision.

Correct Answer: Option C — Tropospheric ozone. Tropospheric ozone is correct because it is contributes to warming near Earth's surface. Tropospheric ozone is also associated with it should not be confused with protective stratospheric ozone. A further identifying fact is that Tropospheric ozone is contributes to warming near Earth's surface. Another useful fact is that Tropospheric ozone is associated with it should not be confused with protective stratospheric ozone. Why the other options are incorrect: Option A — Greenhouse effect: It is keeps Earth warm enough for life and is associated with human emissions strengthen the natural effect. Option B — 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 D — 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. Exam Takeaway: Link Tropospheric ozone with “contributes to warming near Earth's surface” and “it should not be confused with protective stratospheric ozone” for quick revision.

Correct Answer: Option B — Tropospheric ozone. Tropospheric ozone is correct because it is formed by sunlight-driven reactions involving precursor pollutants. Tropospheric ozone is also associated with contributes to warming near Earth's surface. A further identifying fact is that Tropospheric ozone is contributes to warming near Earth's surface. Another useful fact is that Tropospheric ozone is associated with it should not be confused with protective stratospheric ozone. Why the other options are incorrect: Option A — Greenhouse effect: It is occurs when gases absorb and re-emit outgoing infrared radiation and is associated with keeps Earth warm enough for life. Option C — 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 D — 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. Exam Takeaway: Link Tropospheric ozone with “formed by sunlight-driven reactions involving precursor pollutants” and “contributes to warming near Earth's surface” for quick revision.

Correct Answer: Option A — Tropospheric ozone. Tropospheric ozone is correct because it is a secondary air pollutant and greenhouse gas. Tropospheric ozone is also associated with formed by sunlight-driven reactions involving precursor pollutants. A further identifying fact is that Tropospheric ozone is contributes to warming near Earth's surface. Another useful fact is that Tropospheric ozone is associated with it should not be confused with protective stratospheric ozone. Why the other options are incorrect: Option B — Greenhouse effect: It is a natural atmospheric warming process and is associated with occurs when gases absorb and re-emit outgoing infrared radiation. Option C — 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 D — 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. Exam Takeaway: Link Tropospheric ozone with “a secondary air pollutant and greenhouse gas” and “formed by sunlight-driven reactions involving precursor pollutants” for quick revision.

Correct Answer: Option D — Water vapour. Water vapour is correct because it is warmer air can hold more moisture. Water vapour is also associated with the most abundant natural greenhouse gas. A further identifying fact is that Water vapour is acts mainly as a climate feedback rather than the initial human forcing. Another useful fact is that Water vapour is associated with warmer air can hold more moisture. Why the other options are incorrect: Option A — Tropospheric ozone: It is it should not be confused with protective stratospheric ozone and is associated with a secondary air pollutant and greenhouse gas. Option B — Greenhouse effect: It is human emissions strengthen the natural effect and is associated with a natural atmospheric warming process. Option C — 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. Exam Takeaway: Link Water vapour with “warmer air can hold more moisture” and “the most abundant natural greenhouse gas” for quick revision.

Correct Answer: Option C — Water vapour. Water vapour is correct because it is acts mainly as a climate feedback rather than the initial human forcing. Water vapour is also associated with warmer air can hold more moisture. A further identifying fact is that Water vapour is acts mainly as a climate feedback rather than the initial human forcing. Another useful fact is that Water vapour is associated with warmer air can hold more moisture. Why the other options are incorrect: Option A — Tropospheric ozone: It is contributes to warming near Earth's surface and is associated with it should not be confused with protective stratospheric ozone. Option B — Greenhouse effect: It is keeps Earth warm enough for life and is associated with human emissions strengthen the natural effect. Option D — 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. Exam Takeaway: Link Water vapour with “acts mainly as a climate feedback rather than the initial human forcing” and “warmer air can hold more moisture” for quick revision.

Correct Answer: Option B — Water vapour. Water vapour is correct because it is enters the atmosphere mainly through evaporation. Water vapour is also associated with acts mainly as a climate feedback rather than the initial human forcing. A further identifying fact is that Water vapour is acts mainly as a climate feedback rather than the initial human forcing. Another useful fact is that Water vapour is associated with warmer air can hold more moisture. Why the other options are incorrect: Option A — Tropospheric ozone: It is formed by sunlight-driven reactions involving precursor pollutants and is associated with contributes to warming near Earth's surface. Option C — Greenhouse effect: It is occurs when gases absorb and re-emit outgoing infrared radiation and is associated with keeps Earth warm enough for life. Option D — 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. Exam Takeaway: Link Water vapour with “enters the atmosphere mainly through evaporation” and “acts mainly as a climate feedback rather than the initial human forcing” for quick revision.

Correct Answer: Option A — Water vapour. Water vapour is correct because it is the most abundant natural greenhouse gas. Water vapour is also associated with enters the atmosphere mainly through evaporation. A further identifying fact is that Water vapour is acts mainly as a climate feedback rather than the initial human forcing. Another useful fact is that Water vapour is associated with warmer air can hold more moisture. Why the other options are incorrect: Option B — Tropospheric ozone: It is a secondary air pollutant and greenhouse gas and is associated with formed by sunlight-driven reactions involving precursor pollutants. Option C — Greenhouse effect: It is a natural atmospheric warming process and is associated with occurs when gases absorb and re-emit outgoing infrared radiation. Option D — 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. Exam Takeaway: Link Water vapour with “the most abundant natural greenhouse gas” and “enters the atmosphere mainly through evaporation” for quick revision.

Correct Answer: Option D — Nitrous oxide. Nitrous oxide is correct because it is it should not be confused with nitrogen dioxide. Nitrous oxide is also associated with a long-lived greenhouse gas. 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 A — Water vapour: It is warmer air can hold more moisture and is associated with the most abundant natural greenhouse gas. Option B — Tropospheric ozone: It is it should not be confused with protective stratospheric ozone and is associated with a secondary air pollutant and greenhouse gas. Option C — Greenhouse effect: It is human emissions strengthen the natural effect and is associated with a natural atmospheric warming process. Exam Takeaway: Link Nitrous oxide with “it should not be confused with nitrogen dioxide” and “a long-lived greenhouse gas” for quick revision.

Correct Answer: Option C — Nitrous oxide. Nitrous oxide is correct because it is also contributes to stratospheric ozone depletion. Nitrous oxide is also associated with it should not be confused with nitrogen dioxide. 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 A — 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. Option B — Tropospheric ozone: It is contributes to warming near Earth's surface and is associated with it should not be confused with protective stratospheric ozone. Option D — Greenhouse effect: It is keeps Earth warm enough for life and is associated with human emissions strengthen the natural effect. Exam Takeaway: Link Nitrous oxide with “also contributes to stratospheric ozone depletion” and “it should not be confused with nitrogen dioxide” for quick revision.