forestry

3. A system in which resources are continuously recycled and reused, minimizing waste.
4. A method of growing plants using mineral nutrient solutions in a water solvent instead of soil.
6. A mutually beneficial relationship between different people, groups, or organisms.
9. The farming of aquatic organisms such as fish, crustaceans, mollusks, and aquatic plants in controlled environments.
11. A system of growing plants where the roots are suspended in the air and misted with nutrient-rich water.
13. A sealed tank used to break down organic waste without oxygen, producing biogas and fertilizer.

1. A food production system combining aquaculture and hydroponics in a symbiotic environment.
2. A large natural or artificial lake used as a source of water supply.
5. The use of technology and machines to perform tasks with minimal human intervention.
7. Farming A method of growing crops in vertically stacked layers in a controlled environment.
8. Completely covered with or plunged into water or another liquid.
10. A natural resource that is replenished at a rate comparable to or faster than its rate of consumption.
12. A mixture of gases, primarily methane and carbon dioxide, produced from the decomposition of organic matter.