Environment & Ecology · National Air Quality Index
Which two distinct features does the National Air Quality Index (AQI) utilize to effectively present and communicate air pollution levels to the general public?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A percentage score and an alert sound
- 2A letter grade and a warning symbol
- 3A specific numerical value and a color code✓
- 4A geographical map and a bar chart representation
Correct answer
A specific numerical value and a color code
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