Climate Change

4. Resource that can be restored by natural processes.
6. The heat present in a substance or object.
7. Type of energy obtained by harnessing the energy of the sun's rays.
11. Resource that cannot be easily replaced by natural means.
13. Process of converting waste into reusable material.
14. A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
15. Type of energy obtained by harnessing the movement of air.
16. The action of clearing a wide area of trees.
17. Gradual increase in the overall temperature of the earth atmosphere.
18. A colorless, odorless gas produced by burning carbon and organic compounds and by respiration.
20. The surroundings or conditions in which a person, animal, or plant lives.

1. Type of energy generated by radioactive materials.
2. Rainfall made by atmospheric pollution that it causes environmental harm, typically to forests and lakes.
3. Gases in earth´s atmosphere that trap heat.
5. Fossil energy source that formed deep beneath the earth's surface.
8. The variety of life on Earth at all its levels, from genes to ecosystems.
9. The presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.
10. A fuel derived directly from living matter.
12. The dying of a species.
19. Biological community of interactive organisms.