Across
- 4. Land _______ happens when human activity or natural processes damage the land so it can no longer support the local ecosystem
- 7. raising of aquatic organisms for human use or consumption
- 8. cud chewing mammals like cattle sheep and goats
- 9. amount of food produced in a given area
- 10. sugars - wheat, corn, rice
- 12. amino acids - meat
- 13. oils and fats - olives, nuts, animal fat
- 18. plants that are a result of genetic engineering
- 19. chemicals used to kill insects, weeds, and other crop pests
- 21. catching or removing from a population faster than they can replace
- 24. chemicals produced by one organism that affect the behavior of another
- 25. remain unplanted
- 26. chemical ______________ occurs when the minerals in the rock react to form new materials
- 27. partly decomposed organic material
Down
- 1. domesticated animals raised to be used on a farm or sold for profit
- 2. domesticated birds raised for meat and eggs
- 3. condition that occurs when people do not eat sufficient foods to meet the body's needs
- 5. bred and managed for human use
- 6. resulted from new varieties of grain with larger yields
- 11. process by which land in arid or semi-arid areas become more desert like
- 14. widespread starvation caused by a shortage of food
- 15. accumulation of salts in the soil
- 16. type and amount of food one eats
- 17. surface layer of soil rich in organic material
- 20. amount of energy available in food
- 22. movement of rock, soil, and sand by wind and water
- 23. any organism that occurs where it's not wanted