Across
- 3. many plants and animals are heading away from the equator towards the poles because of the greater amount of __________ in our atmosphere
- 6. more co2 in the water causes the water to become more ______
- 10. the effect of icecaps melting
- 11. a very potent greenhouse gas mainly produced by cows
- 14. the heating of the earth's surface
- 15. the layer where asteroids burn up
- 17. a greenhouse gas that comes from many home appliances like the fridge and also was in most spray cans
- 18. _______ decreases with altitude
- 19. formula for methane
- 20. a gas that protects us from UV and other deadly rays
- 23. _______ becomes more intense the hotter the earth gets
- 24. the cutting down of forests
- 25. humans ____ for fossil fuels which also has a carbon footprint to it
Down
- 1. ___________ varies with altitude
- 2. when the act of letting animals graze on land until it dies
- 4. a greenhouse gas that we drink
- 5. the most common gas in our atmosphere
- 7. dead plants and animals that release co2 once they are burned
- 8. layer where the ozone is held
- 9. humans burning fossil fuels creating great amounts of co2 and greatly adds to the _______ of the earth
- 12. the layer where weather happens on earth
- 13. the third most prevalent gas in our atmosphere
- 16. water vapour is also known as
- 17. the most common greenhouse gas
- 21. a type of gas that humans need to live
- 22. the hottest layer of our atmosphere