Across
- 3. land management where pasture or crops are integrated with trees and shrubs.
- 6. discarded as no longer useful after the completion of a process.
- 8. science that studies organisms and how they interact with the environment around.
- 9. celestial body that is in orbit around the Sun.
Down
- 1. something that remains after the anaerobic digestionof a biodegradable feedstock
- 2. presence or introduction into the environment of a substance with harmful or poisonous effects.
- 4. return material to a previous stage in a cyclic process.
- 5. storage chamber
- 6. a colourless and odourless liquid that is the basis of the fluids of living organisms
- 7. substance in a state in which it will expand freely to fill the whole of a container.