Across
- 3. A form of microorganism
- 5. - An element most living things comsume as food: found int he air we breath
- 7. To break up, crumble to pieces.
- 10. Related to food production without using chemicals or fertilizer
- 11. A substance required by plants and other living things to survive and grow
- 12. A nutrient-rich organic matter in soil.
Down
- 1. A substance produced through composting
- 2. Material that is readily decomposed or broken down by biological means
- 4. A microscopic living thing
- 6. To break down organic matter
- 7. The process where organic matter is broken down
- 8. A method of solid waste disposal where rubbish is buried under layers of dirt
- 9. To decompose naturally