Atmosphere Crossword

7. Process by which plants absorb CO₂ and release oxygen.
8. Gas in the stratosphere that protects Earth from UV radiation.
10. The layer of gases surrounding Earth.
11. The lowest layer of the atmosphere, where weather occurs.
13. Essential gas for combustion and respiration, making up about 21% of the atmosphere.
14. The process of burning, releasing CO₂ into the atmosphere.
15. The clearing of trees, which increases CO₂ levels.
17. Type of gas that traps heat in Earth’s atmosphere.
18. Process by which animals and humans release CO₂.
20. A powerful greenhouse gas, often produced by livestock.

1. Combustion that produces carbon monoxide due to insufficient oxygen.
2. The second layer of the atmosphere, containing the ozone layer.
3. The most abundant gas in Earth’s atmosphere.
4. Day-to-day changes in atmospheric conditions.
5. The introduction of harmful substances into the environment, often from human activity.
6. All the water on Earth, including oceans, rivers, lakes, and glaciers.
9. Dioxide: A greenhouse gas released from burning fossil fuels.
12. Natural fuels like coal and oil that release CO₂ when burned.
16. The circulation of carbon among Earth's atmosphere, oceans, and living organisms.
19. The average weather conditions in an area over a long period.