Final answer:
Air quality is vital for human health and environmental quality. The Air Quality Index helps people protect their health by indicating outdoor air pollution levels.
Explanation:
Air quality is crucial for both human health and environmental quality. Pollutants in both outdoor and indoor air can have detrimental effects on human health, causing respiratory and circulatory issues. The Air Quality Index (AQI) is used to assess outdoor air pollution levels, guiding individuals on when to limit outdoor exposure to safeguard their health.
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