Across
- 3. is bad chemical that can harm life
- 5. is the second human effect
- 9. is a gas that is used for the green house
- 13. is the main gas for atmosphere layers
- 14. is the earths barrier from bad radiation
- 15. are what sustain life to the max
- 16. is the third human effect
- 19. is the name for differnet elements that sustain life
- 21. is the barrier to keep to
- 22. is above the stratosphere
- 24. is the second step in green house effect
Down
- 1. is the process in which the cycle of hot air rises and cold air sinks
- 2. is one human effect
- 4. is the third step in green house effect
- 5. is one of the main gas for atmosphere layers
- 6. is the process in which plants fed off the sun
- 7. is the measure of heat and cold
- 8. is becoming a problem
- 10. is the process in which water molecules come together
- 11. is the last gas main for atmosphere layers
- 12. is regenerating and process
- 17. extends from the top of the troposphere to about 50 km above ground
- 18. is the main gas for Green House
- 20. is the first step of the green house effect
- 23. is the lowest layer of our atmosphere