Greenhouse Effect and Global Warming Questions and Answers – Page 4

Correct Answer: Option B — Nitrous oxide. Nitrous oxide is correct because it is strongly linked to agricultural soils and nitrogen fertilisers. Nitrous oxide is also associated with also contributes to stratospheric ozone depletion. 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 enters the atmosphere mainly through evaporation and is associated with acts mainly as a climate feedback rather than the initial human forcing. Option C — Tropospheric ozone: It is formed by sunlight-driven reactions involving precursor pollutants and is associated with contributes to warming near Earth's surface. Option D — Greenhouse effect: It is occurs when gases absorb and re-emit outgoing infrared radiation and is associated with keeps Earth warm enough for life. Exam Takeaway: Link Nitrous oxide with “strongly linked to agricultural soils and nitrogen fertilisers” and “also contributes to stratospheric ozone depletion” for quick revision.

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.

Correct Answer: Option D — Methane. Methane is correct because it is it is the main component of natural gas. Methane is also associated with a potent short-lived greenhouse gas. A further identifying fact is that Methane is warms more strongly per molecule than carbon dioxide over shorter periods. Another useful fact is that Methane is associated with it is the main component of natural gas. Why the other options are incorrect: Option A — Nitrous oxide: It is it should not be confused with nitrogen dioxide and is associated with a long-lived greenhouse gas. Option B — Water vapour: It is warmer air can hold more moisture and is associated with the most abundant natural greenhouse gas. Option C — Tropospheric ozone: It is it should not be confused with protective stratospheric ozone and is associated with a secondary air pollutant and greenhouse gas. Exam Takeaway: Link Methane with “it is the main component of natural gas” and “a potent short-lived greenhouse gas” for quick revision.

Correct Answer: Option C — Methane. Methane is correct because it is warms more strongly per molecule than carbon dioxide over shorter periods. Methane is also associated with it is the main component of natural gas. A further identifying fact is that Methane is warms more strongly per molecule than carbon dioxide over shorter periods. Another useful fact is that Methane is associated with it is the main component of natural gas. Why the other options are incorrect: Option A — Nitrous oxide: It is also contributes to stratospheric ozone depletion and is associated with it should not be confused with nitrogen dioxide. Option B — 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 D — Tropospheric ozone: It is contributes to warming near Earth's surface and is associated with it should not be confused with protective stratospheric ozone. Exam Takeaway: Link Methane with “warms more strongly per molecule than carbon dioxide over shorter periods” and “it is the main component of natural gas” for quick revision.

Correct Answer: Option B — Methane. Methane is correct because it is emitted by livestock, wetlands, landfills and fossil-fuel systems. Methane is also associated with warms more strongly per molecule than carbon dioxide over shorter periods. A further identifying fact is that Methane is warms more strongly per molecule than carbon dioxide over shorter periods. Another useful fact is that Methane is associated with it is the main component of natural gas. Why the other options are incorrect: Option A — Nitrous oxide: It is strongly linked to agricultural soils and nitrogen fertilisers and is associated with also contributes to stratospheric ozone depletion. Option C — Water vapour: It is enters the atmosphere mainly through evaporation and is associated with acts mainly as a climate feedback rather than the initial human forcing. Option D — Tropospheric ozone: It is formed by sunlight-driven reactions involving precursor pollutants and is associated with contributes to warming near Earth's surface. Exam Takeaway: Link Methane with “emitted by livestock, wetlands, landfills and fossil-fuel systems” and “warms more strongly per molecule than carbon dioxide over shorter periods” for quick revision.

Correct Answer: Option A — Methane. Methane is correct because it is a potent short-lived greenhouse gas. Methane is also associated with emitted by livestock, wetlands, landfills and fossil-fuel systems. A further identifying fact is that Methane is warms more strongly per molecule than carbon dioxide over shorter periods. Another useful fact is that Methane is associated with it is the main component of natural gas. Why the other options are incorrect: Option B — Nitrous oxide: It is a long-lived greenhouse gas and is associated with strongly linked to agricultural soils and nitrogen fertilisers. Option C — Water vapour: It is the most abundant natural greenhouse gas and is associated with enters the atmosphere mainly through evaporation. Option D — Tropospheric ozone: It is a secondary air pollutant and greenhouse gas and is associated with formed by sunlight-driven reactions involving precursor pollutants. Exam Takeaway: Link Methane with “a potent short-lived greenhouse gas” and “emitted by livestock, wetlands, landfills and fossil-fuel systems” for quick revision.

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.

Correct Answer: Option C — Carbon dioxide. Carbon dioxide is correct because it is the largest contributor to human-caused long-term warming. Carbon dioxide is also associated with forests and oceans absorb part of its emissions. 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 warms more strongly per molecule than carbon dioxide over shorter periods and is associated with it is the main component of natural gas. Option B — Nitrous oxide: It is also contributes to stratospheric ozone depletion and is associated with it should not be confused with nitrogen dioxide. Option D — 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. Exam Takeaway: Link Carbon dioxide with “the largest contributor to human-caused long-term warming” and “forests and oceans absorb part of its emissions” for quick revision.

Correct Answer: Option B — Carbon dioxide. Carbon dioxide is correct because it is released notably by fossil-fuel combustion and deforestation. Carbon dioxide is also associated with the largest contributor to human-caused long-term warming. 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 emitted by livestock, wetlands, landfills and fossil-fuel systems and is associated with warms more strongly per molecule than carbon dioxide over shorter periods. Option C — Nitrous oxide: It is strongly linked to agricultural soils and nitrogen fertilisers and is associated with also contributes to stratospheric ozone depletion. Option D — Water vapour: It is enters the atmosphere mainly through evaporation and is associated with acts mainly as a climate feedback rather than the initial human forcing. Exam Takeaway: Link Carbon dioxide with “released notably by fossil-fuel combustion and deforestation” and “the largest contributor to human-caused long-term warming” for quick revision.

Correct Answer: Option A — Carbon dioxide. Carbon dioxide is correct because it is a long-lived greenhouse gas. Carbon dioxide is also associated with released notably by fossil-fuel combustion and deforestation. 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 B — Methane: It is a potent short-lived greenhouse gas and is associated with emitted by livestock, wetlands, landfills and fossil-fuel systems; those are the identifying facts of Methane. Option C — Nitrous oxide: It is a long-lived greenhouse gas and is associated with strongly linked to agricultural soils and nitrogen fertilisers; those are the identifying facts of Nitrous oxide. Option D — Water vapour: It is the most abundant natural greenhouse gas and is associated with enters the atmosphere mainly through evaporation; those are the identifying facts of Water vapour. Exam Takeaway: Link Carbon dioxide with “a long-lived greenhouse gas” and “released notably by fossil-fuel combustion and deforestation” for quick revision.