Across
- 3. widespread starvation caused by a shortage of food
- 4. the wearing away of rock or soil
- 5. raising aquatic organisms for human use or consumption
- 7. harvesting catching or removing more organisms than a population can replace
- 12. the use of living organisms to control pests
- 13. the accumulation of salt in soil
- 15. when arid land areas become more desertlike because of human activities
- 16. chemicals used to kill insects, weeds and pests
Down
- 1. a condition that occurs when people do not consume enough calories
- 2. the amount of food that can be produced in an area
- 6. land that can be used to grow crops
- 8. when genetic material in living cells is used for medical or industrial use
- 9. the amount and type of food a person eats
- 10. the surface layer of soil
- 11. animal species that have been bred and managed for human use
- 14. partly decomposed organic material