Physics · Atmospheric Physics and Space Environment
Consider the following statements regarding the impact of greenhouse gas emissions on Earth's orbital environment: Statement I: Increasing levels of human-caused greenhouse gas emissions in the atmosphere may reduce the total number of satellites that can safely orbit Earth due to an accumulation of debris. Statement II: Greenhouse gases cool and contract the mesosphere and thermosphere by radiating infrared energy into space. This lowers atmospheric density at orbital altitudes, reducing drag and causing space debris to remain in orbit longer. Which one of the following is correct in respect of the above statements?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both Statement I and Statement II are correct, and Statement II is the correct explanation for Statement I.✓
- 2Both Statement I and Statement II are correct, but Statement II is not the correct explanation for Statement I.
- 3Statement I is correct, but Statement II is incorrect.
- 4Statement I is incorrect, but Statement II is correct.
Correct answer
Both Statement I and Statement II are correct, and Statement II is the correct explanation for Statement I.
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