Land, Air, and Water Resources

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Across
  1. 7. pollutants released into the air
  2. 10. the major chemical in photochemical smog
  3. 11. the major cause of the hole in the ozone layer
  4. 13. if farmers plant the same crops in a field each year, the soil becomes less fertile and _______ happens
  5. 14. top layer of soil consists of dead leaves and grass
  6. 17. reclaiming raw materials and reusing them create new products
  7. 18. the element that makes up ozone
  8. 20. to create less waste from the beginning
  9. 22. a polluted liquid formed when rain mixes with dissolved chemicals in a dump
  10. 25. water and human wastes that are washed down sinks, showers, and toilets.
  11. 26. a radioactive air pollutant formed naturally by incineration burning of solid waste
  12. 27. wastes produced in homes, businesses, and schools
  13. 29. the movement of cold water upward from the deep ocean
Down
  1. 1. process of restoring an area of land to a more productive state
  2. 2. this gas forms when fuels are not completely burned
  3. 3. this type of waste is any material that can be harmful to human health or the environment
  4. 4. mixture of rock fragments, nutrients, water, air and decaying animal and plant matter
  5. 5. contains rock fragments, water, and air, but has less animal and plant matter than the topsoil
  6. 6. chemicals that kill crop-destroying organisms
  7. 7. the process by which water, wind, or ice moves particles of rocks or soil
  8. 8. holds municipal solid waste, construction debris, and some types of agricultural and industrial waste
  9. 9. refers to finding another use for an object rather than discarding it
  10. 12. the rock that makes up the Earth's crust
  11. 15. materials that can be broken down and recycled by bacteria and other decomposers are ___________
  12. 16. a period when less rainfall than normal falls in an area
  13. 19. the advance of desert-like conditions into areas that were previously fertile
  14. 21. may be applied to soil to supply nutrients to help crops grow better
  15. 23. precipitation that is more acidic than normal because of air pollution
  16. 24. these break down grass clippings, leaves, and some food wastes in compost
  17. 28. a thick, brownish haze formed when certain gases in the air react with sunlight