Across
- 2. The degree of harm a chemical substance can inflict.
- 5. a material found in air, water, or soil that is harmful to humans and other organisms
- 8. the cleanliness of the air we breathe
- 9. able to be decomposed by microorganisms to something that won’t harm the environment
- 11. the introduction of harmful substances or products into the environment, such as air pollution.
- 14. treaty that all countries agreed on to set a limit on how much greenhouse gases we could release to prevent global warming
- 16. any material that can be harmful to human health or the environment if it is not properly disposed of
- 17. act that made it so the EPA to control and limit waste disposal
- 18. an increase in the amount of carbon dioxide and other gases in the atmosphere which is believed to be the cause of a gradual warming of the surface of the Earth.
- 19. the study of living things in relation to their physical environment and to each other
Down
- 1. CO2
- 3. law passed by congress to control air pollution
- 4. federal agency that protects human health and the environment
- 5. water that is safe to drink
- 6. a layer of oil that is floating over a large area of the surface of the sea, usually because an accident has caused it to escape from a ship or container
- 7. O3
- 10. the beginning of the use of factories in making U.S. goods between 1760 and 1840
- 12. the theory that the global climates are slowly warming because of the greenhouse effect
- 13. act put in place to make sure that the government’s actions do not affect the environment in a negative way
- 15. any material in nature that people use and value \