Across
- 5. The ability to do work
- 6. Used to prevent depletion and ensure long-term sustainability.
- 7. The upper layer of earth in which plants grow a black or dark brown material typically consisting of a mixture of organic remain clay rock particles
- 8. Scientific knowledge for normal purposes, especially in industries.
Down
- 1. The improved use of resources to reduce waste and increase effectiveness
- 2. A colorless transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms
- 3. The protection and careful use of natural resources
- 4. The invisible gaseous substance surrounding the Earth, a mixture mainly of oxygen and nitrogen.