Across
- 3. Warming that the Earth supports life.
- 10. Huge specially designed pits where waste materials are dumped and buried.
- 11. A school that is environmentally-friendly in several different ways.
- 14. Rain that is more acidic than normal rain.
- 15. To change items in some way so that they can be used again.
- 17. The saving of resources.
- 20. Oil, coal and natural gas that are used to provide energy.
- 22. Easily broken down in the environment.
- 23. A gas made of three oxygen atoms that occurs naturally and helps protect you from the sun's harmful rays.
Down
- 1. When fossil fuels, such as oil, natural gas, or coal, are used, they cannot be replaced.
- 2. Human made liquid, solids, sludge, or radioactive wastes.
- 4. The upper atmosphere .
- 5. agency of the U.S. government that is responsible for protecting the environment.
- 6. All the living and nonliving things around you.
- 7. Dirty or harmful substances in the environment.
- 8. A product used on crops to kill insects and other pests.
- 9. It consists of human waste, garbage, detergent, and other household wastes washed down drains and toilets.
- 12. A rise in the earth's temperatures.
- 13. Redacting waste before it occurs.
- 16. The water that collects under the earths surface.
- 18. the yellow-brown haze that forms when sunlight reacts with air pollution.
- 19. A branch of the U.S. Department of Labor that protects American workers.
- 21. Unit or harmful for living thing.