Across
- 2. bred and managed for human use
- 4. the clearing of trees from an area without replacing them
- 5. chemicals used to kill insects, weeds, and other crop pests
- 6. the amount of food that can be produced in a given area
- 9. rapid expansion of a city into the country side around the city
- 12. the resources that are produced by natural and artificial ecosystems
- 14. the type and amout of food a person eats
- 15. the movement of rock and soil by wind and water
- 16. catching or removing from a population more organisms than the population can replace
- 18. widespread starvation by shortage of food
- 19. cud chewing mammals that have 3 to 4 stomachs
- 20. use of living organisms to control pests
- 25. the increase temperature in a city
- 26. domesticated animals raised to be used on farms and sold for profit
- 27. land that is covered mainly with buildings
- 28. soil the surface layer of soil
Down
- 1. the process of which land in arid or semiarid areas become more desert like
- 3. a condition that occurs when people don't consume enough calories
- 7. determinig in advance how land will be used
- 8. the raising of aquatic organisms for huma use or consumption
- 10. an area in which the land and the ecosystems it supports are proteced fromfrom all exploitation
- 11. genetic material in a living cell is modified for medical or industrial use
- 13. the accumilation of salts in soil
- 17. land that contains relatively few people and large areas o space
- 21. allowing more animals to graze in an area than the range can suport
- 22. a computarized system for sorting,manipulating, and viewing geographic data
- 23. trees are planted to re-establish trees that have been cut down in forest land
- 24. partly decomposed organic material