The greenhouse effect is sustained by the atmospheric presence of:
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Answer: D. CO2 in the atmosphere
Explanation
Carbon dioxide molecules possess chemical structures that absorb outgoing infrared thermal radiation effectively. Higher concentrations of atmospheric carbon dioxide trap more heat near the planetary surface. CO2 acts as a primary long-lived driver sustaining the natural global greenhouse effect. Fossil fuel combustion and deforestation release massive quantities of carbon dioxide into the air. Carbon dioxide remains in the atmosphere for centuries, exerting a prolonged warming influence. Natural carbon sinks like forests and oceans absorb a portion of emitted carbon dioxide.
Environmental monitoring stations track atmospheric carbon dioxide levels to measure climate change drivers. Policymakers set carbon emission caps to reduce the accumulation of CO2 in the atmosphere. Forest conservation projects help sequester carbon dioxide, mitigating anthropogenic greenhouse gas impacts. Option A refers to the ozone layer which primarily filters ultraviolet radiation rather than heat. Option B names infrared radiation itself rather than the atmospheric gas driving the effect. Option C mentions moisture which contributes, but CO2 remains the foundational gas emphasized here.
- Subject
- Agriculture
- Category
- Forestry
- Topic
- —
- Difficulty
- medium
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