The environment & power

1. a natural wide flow of fresh water across the land into the sea, a lake
3. the material on the surface of the ground in which plants grow
5. a raised part of the earth's surface, much larger than a hill, the top of which might be covered in snow
6. a current of air moving
7. something that is different from something else, especially from what is usual, and offering the possibility of choice
8. the mixture of gases around the earth
11. a large area of water surrounded by land and not connected to the sea
13. waste material or unwanted thing that you throw away
15. relating to forms of energy that are produced using the sun, wind, etc.
16. the act of dropping rubbish on the ground in public places
17. a form of energy that can be produced in several ways and that provides power to devices that create light, heat, etc.

2. the natural world in which people, animals, and plants live
4. a large area of land covered with trees and plants
9. the power from something such as electricity or oil that can do work
10. a liquid without color or smell that falls as rain and is used for drinking, washing, etc.
12. the light that comes from the sun
13. a way of living that is good for the environment
14. to make something or bring something into existence