Across
- 2. precipitation carrying dangerous chemicals that kills living things
- 6. re-use old materials to make new products
- 7. materials that cycle through natural processes to be used again
- 11. cutting all the trees in a forest
- 12. large farms that depend on modern technology to produce crops in large amounts
- 14. areas of Asia that are rapidly disappearing because of deforestation
- 16. a place where living elements depend on other living and nonliving elements for their survival
- 20. products are distributed to peole who need them
- 22. materials that cannot be replaced when they are used up
- 24. chemical that kill insects
- 27. countries with few industries
- 28. a slow increase in the Earth's temperature (now called "climate change")
- 29. rocks, soil, air, water
Down
- 1. coal, oil, and natural gas
- 3. any useful material found in the environment
- 4. dangerous chemicals destroying the ozone layer
- 5. farms that raise a single crop for export using many workers
- 8. a device used to reduce dangerous chemicals released into the air
- 9. raising only enough food to feed your family
- 10. using resources directly to make products
- 13. changing raw materials into finished products
- 15. gifts or loans from one country to another
- 17. countries with many industries
- 18. resources that must be changed before they can be used
- 19. turning raw materials into things people use
- 21. resources that can be replaced
- 23. the blanket of gas in the upper part of our atmosphere
- 25. top petroleum producer and consumer
- 26. the place where organisms live