Unit 9 crossword

123456789101112
Across
  1. 3. nonrenewable resource that comes from dead plants and animals
  2. 4. process by which land become like a desert.
  3. 6. body of water formed behind a dam.
  4. 7. growth of urban areas.
  5. 8. drinking water.
  6. 9. quality measuring how clean the air is.
  7. 10. resource natural resource that can be renewed.
  8. 12. resource natural material used by humans.
Down
  1. 1. removal of trees
  2. 2. waste added to water
  3. 5. saving natural resources.
  4. 11. resource natural resource that humans use to generate energy.