Across
- 4. A key element of the water cycle for farming
- 7. The upper layer of earth where plants grow
- 8. A source of protein from water ecosystems
- 9. Tiny units from which plants grow
- 10. A grain also known as maize
- 13. A system combining agriculture and forestry
- 16. Natural or artificial substance added to soil to promote plant growth
- 19. The ability to endure and remain productive over time
- 20. A source of light and energy for plants
Down
- 1. The practice of growing crops and raising animals for food
- 2. Important for shade and producing fruits or wood
- 3. To reduce waste and preserve resources
- 5. Living organisms that convert sunlight into energy
- 6. A grain used to make bread and pasta
- 8. People who produce food by cultivating land
- 9. To keep food safe for later consumption
- 11. Severe scarcity of food in a region
- 12. Often sweet and eaten fresh, such as apples or oranges
- 14. A staple grain for much of the world's population
- 15. A place where crops and livestock are cultivated
- 17. A nutritious liquid produced by mammals
- 18. The process of increasing in size or maturity