Across
- 3. conversion of a substance from the solid to the gaseous state without itsbecoming liquid
- 4. Coal and other fossil fuels
- 5. Cycle biogeochemical process
- 6. Process of converting nitrogen compounds
- 8. Cycle The ocean plays a major role
- 11. When we heat the house in the winter the windows fog
- 12. The forests protect ground water and retain rainwater.
- 13. He or she would still need to breathe
- 14. Caused by an increase in temperature and/or a decrease in pressure
- 16. contains a certain amount of hydrogen,oxides of carbon
- 17. It is a colourless and odourless
Down
- 1. Water
- 2. streams, rivers, lakes, wetlands,and creeks.
- 7. Plants release water through their leaves
- 9. Oxygen atoms
- 10. Cycle As the planet gets warmer the water cycle is changing.
- 15. The weather forecast calls for some sort of frozen