Across
- 1. The gas form of water in the water cycle which is a greenhouse gas
- 3. The most common gas in the atmosphere
- 5. The layer of atmosphere between the stratosphere and the thermosphere
- 6. The layer that protects us from the sun's harmful rays
- 8. The process where the Earth traps heat close to the surface
- 10. A combination of the words "smoke" and "fog" that occurs with large amounts of burning coal in the atmosphere
- 12. Gases such as carbon dioxide, water vapor, methane, and ozone in the atmosphere
- 13. This is on the periodic table and stays in the environment as dust, and is very dangerous and harmful to our atmosphere
- 16. This is what humans breathe out that plants use to make nutrients
- 17. This is another pollutant that is very harmful and contributes directly to the making of smog
- 20. The layer where all weather occurs
- 22. To make dirtier or not clean
- 24. The uppermost layer between the exosphere and the mesosphere
- 25. The second most common gas which is made from photosynthesis
Down
- 2. Energy that can me remade faster than it can be used/destroyed
- 4. The layers of air that surround the Earth
- 7. Natural fuels that are from remains from living organisms
- 9. The continuous cycle of carbon atoms through respiration and photosynthesis
- 11. This pollutant effects the number of greenhouse gases in the air and can cause global warming
- 14. This is a chemical reaction that occurs when sulfur dioxide and nitrogen oxides are released into the air
- 15. The last layer of the atmosphere next to space
- 18. The lower part of the thermosphere
- 19. a very flammable hydrocarbon which is a greenhouse gas
- 21. The layer of the atmosphere that is above the troposphere
- 23. Rising global temperatures that are due to increasing pollution