UNIT 5 AMAZE B

3. producing electricity by the force of fast moving water such as rivers or waterfalls.
5. in danger of being harmed, lost, unsuccessful, etc.
7. a current of air moving approximately horizontally, especially one strong enough to be felt.
8. existing in limited quantities that cannot be replaced after they have all been used.
9. wood that has been cut into various lengths for building.
12. all the plants, animals, and people living in an area considered together with their environment as a system of relationships.
15. having or producing powerful and dangerous energy that comes from the breaking up of atoms.
17. a substance, such as water, that is not solid or a gas and that can be poured easily.
18. containing an equal amount or number of similar things or people.

1. able to be obtained, used, or reached.
2. of or from the sun, or using the energy from the sun to produce electric power
4. relating to forms of energy that are produced using the sun, wind, etc., or from crops, rather than those using fuels such as oil or coal.
6. gas, found underground, that is used as a fuel.
10. a fuel that is made from living things or their waste.
11. fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago.
12. no longer existing.
13. to make something or bring something into existence.
14. being or using the power produced when the nucleus of an atom is divided or joined to another nucleus.
16. to take the place of something, or to put something or someone in the place of something or someone else.
19. a hard, black substance that is dug from the earth in pieces, and can be burned to produce heat or power, or a single piece of this.