Across
- 3. the contamination of the atmosphere by the introduction of pollutants from human and natural sources
- 6. a colorless, odorless gas produced by burning carbon and organic compounds
- 10. the protection and wise use of resources
- 11. contamination of water by waste matter or other material that is harmful to organisms that are exposed to the water
Down
- 1. a disorder of nutrition that results when a person does not consume enough of each of the nutrients that are needed by the human body
- 2. any natural material or energy source that is used by humans, such as water, petroleum, minerals, forests, and animals
- 4. the process of dealing with or controlling things
- 5. a natural and a man-made product that occurs in the Earth's upper atmosphere.
- 7. the property of acting or producing effectively with minimum waste, expense, or unnecessary effort
- 8. waste gases from which contain sulfur and nitrogen oxides, which combine with atmospheric water
- 9. a greenhouse gas that contributes to climate change