crossword

1. A person who goes on land which does not belong to him, usually to hunt or fish illegally.
6. Power which is generated at a power plant and sent through power lines to homes to make things like light and television work.
7. A power failure, when the electricity goes out for a region.
10. The retention of radiation from the sun into the Earth's atmosphere that creates a rise in the temperature.
12. The act of preserving, to keep from being used up or lost.
13. To use something again instead of just throwing it out.
14. Something that kills insects.
15. The combination of smoke and fog in the air.

2. A mixture of rotted leaves or plants that can be mixed into garden soil to give nutrition to growing plants.
3. A specific place where an animal lives.
4. A word used to describe practices which are environmentally friendly and protect the Earth from harm.
5. The process of making the environment dirty through things like garbage, chemicals, or gases.
6. A specific species that is at risk for extinction due to natural and human forces.
8. When something is completely gone from this planet
9. Violent shaking of earth's crust due to movement deep underground and which can cause a lot of damage.
11. To use less of something
13. To use trash to make something new.