Across
- 3. planting of timber on land right after being harvested
- 6. wildlife can do this much faster if just left alone
- 7. the Arab-Israeli war doubled the price of this after the Arab cut export ties with U.S.
- 8. of this
- 9. trees that are used to make paper
- 11. this is the most recycled element in the U.S.
- 15. organization started to halt the decrease in crude oil prices
- 17. invention of this made hard Great Plains land capable of being cultivated
- 19. land suitable for growing crops
- 20. the inference of; to hinder
- 22. to have a limited amount of something
- 23. the best way to conserve natural resources is
- 24. preservation techniques that are to minimize human interference with wildlife habitat
Down
- 1. resources that can replenish by itself
- 2. some area are remote and get little moister so this is required to grow crops
- 4. the invention of the combustion engine in the late 1800s led to this
- 5. the removal of salt from water, to make it drinkable
- 7. what element was found in the Great American Desert
- 10. this event lead to soil conservations, also killed many people, wildlife, and plants
- 12. species of wild animals not considered game; raptors, rodent, and songbirds
- 13. slash and burn are done so fire ashes can do this to the ground
- 14. resources iron, cooper, lead, uranium or examplr
- 16. made it possible to pump water from much deeper depths
- 18. what is the worst of the two types of erosion
- 21. resources minerals found in nature that are used for humankind