Environment & Ecology · People, Development and Environment
What is the primary technical reference provided by the WHO Air Quality Guidelines to assist policy makers worldwide?
- 1A comprehensive strategy focusing on generalized occupational health risks
- 2Threshold concentration levels of identified major air pollutants✓
- 3Frameworks to fund and promote local environmental advocacy groups
- 4Mandates to eliminate the ambient ozone level completely
Correct answer
Threshold concentration levels of identified major air pollutants
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