Across
1. the envelope of gases surroundi
2. necessary for photosynthesis of
4. substance contaminating the en
6. where ozone layer is found
7. measures air quality
8. air quality if AQI ranges from 51
9. long-term heating of earth's clim
Down
1. concentration of pollutants in the
3. a gas essential to animals
5. introduction of harmful materials
environment
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Answer:
1. ATMOSPHERE
2. CHLOROPHYLL or i guess it's PHOTOSYNTHESIS
6. STRATOSPHERE
7. AIR QUALITY INDEX OR AQI
8. YELLOW or I think MODERATE
9. GLOBAL WARMING
DOWN
1. AIR POLLUTION OR AIR POLLUTANT
3. CARBON DIOXIDE
5. POLLUTION
Explanation:
sorry Wala pong 4 Kasi diko masyadong naintindihan
hope it helps