Across
- 2. The saving of resources.
- 6. A gas made of three oxygen atoms that helps protect us from the sun.
- 7. Natural materials that cannot be replaced once they are used.
- 10. Coal, oil, and natural gas used for energy.
- 12. Human waste, garbage, and detergents washed down drains and toilets.
- 14. A rise in the Earth's temperatures and change in weather patterns.
- 15. Reducing waste before it is even used or created.
- 16. The government agency committed to protecting the environment.
- 18. Dirty or harmful substances in the environment.
- 19. The trapping of heat by carbon dioxide and other gases in the air.
- 22. Rain that is more acidic than normal and can harm forests and stone.
Down
- 1. A yellow-brown haze formed when sunlight reacts with air pollution.
- 3. A shield in the upper atmosphere that protects us from UV radiation.
- 4. Water that collects under the Earth’s surface.
- 5. A product used on crops to kill insects and other pests.
- 8. Changing items in some way so they can be used again.
- 9. The agency that ensures work environments are safe and healthy.
- 11. Huge specially designed pits where waste materials are dumped and buried.
- 13. A school that is environmentally friendly and provides a healthy environment.
- 15. To make the environment unfit or harmful for living things.
- 17. Materials that are easily broken down in the environment.
- 20. All the living and nonliving things around you.
- 21. Human-made liquid, solid, or radioactive wastes dangerous to health.