Environment & Ecology · Environment
What defines qualitative pollutants based on their classification by existence in nature?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Synthetic substances introduced into the atmosphere solely by human activities✓
- 2Substances naturally present in the environment that exceed safe threshold levels
- 3Compounds formed by chemical reactions between primary pollutants and the atmosphere
- 4Solid or liquid aerosols directly emitted into the atmosphere from natural sources
Correct answer
Synthetic substances introduced into the atmosphere solely by human activities
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