Across
- 5. is when organisms take oxygen from the atmosphere to create glucose
- 7. when nitrogen is changed into nitrogen compounds
- 8. when water leaves the earth and turns into water vapor
- 9. Fuels such as gasoline
Down
- 1. makes up 78% of the atmosphere
- 2. when the water in the clouds fals to the ground
- 3. when water cools and becomes liquid again
- 4. is dead decomposed organisms such as bacteria and fungi
- 6. is when the plants remove carbon dioxide from the atmosphere to make glucose then they release oxygen
- 7. Cycle is the way that nitrogen cycles through the environment