ENVIRONMENT

4. The process of decomposing organic materials to produce nutrient-rich soil.
5. Things that are natural or related to nature.
6. A form of oxygen that protects the earth from harmful ultraviolet radiation.
8. Meeting the needs of the present without compromising the ability of future generations to meet their own needs.
11. A community of living organisms and their interactions with each other and their physical environment.
12. Types of waste that does not contain organic compounds.

1. What does human needs for living.
2. The process of converting waste materials into reusable materials.
3. The variety of life forms in a given area, including plants, animals, and microorganisms.
7. Waste that is not used.
9. Anything that makes the earth unhealthy.
10. Energy sources that are naturally replenished, such as solar, wind, and hydroelectric power.