deforestation

8. humans burn this which makes carbon dioxide go into the atmosphere.
10. Tropical deforestation causes 20% of the world’s __________emision.
11. Deforestation is _______ destroying forests.
12. we pump waste into the ocean threatening this sphere.
13. Dioxide This thing is pulled from the air when plants do photosynthesis.
14. The atmosphere brings the hydrosphere water up for precipitation. These things also help the water cycle.

1. Through this process, plants convert the sunlight, carbon dioxide and water into food for itself.
2. when plants are _____ the carbon moves up the food chain and gets transferred.
3. if one of the four major spheres does this, the rest will also be affected.
4. humans overfishing, destroying habitats and over hunting effects this sphere.
5. humans pile up a lot of trash in the land affecting this earth sphere.
6. 25% of the atmosphere carbon dioxide from burnt fossil fuels are absorbed by certain area of _____
7. Through this process humans can put carbon dioxide into the atmosphere.
9. When plants do this, the carbon from them can go back into the ground.
11. this thing can take in some of the carbon dioxide exhaled for photosynthesis.