Across
- 3. The parts of Earth where living organisms exist
- 6. The supply of water to land or crops to help with growth; typically through channels.
- 7. Temperature and rainfall in an area over a long period of time.
- 9. The angular distance north or south of the equator
- 11. The farming technique where arable land is left without sowing over one or more farm cycles
- 12. The recycling of nutrients and chemical transformations.
Down
- 1. Many different cultures coexisting in one location
- 2. A sloped plain which is cut into successive receding flat surfaces
- 4. Naturally grown and produced
- 5. If something is found in and limited to a particular region
- 8. The fraction of light which is reflected back by a body or surface
- 10. The breeding and raising of aquatic plants and animals