Using Natural Resources

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Across
  1. 4. natural resource that can be replenished by natural processes at least as quickly as it is used
  2. 5. type of air pollution that is formed when sunlight reacts with waste gases from the burning of fossil fuels
  3. 6. mixture of gases that forms a layer around Earth
  4. 8. act of meeting human needs in ways that ensure future generations also will be able to meet their needs
  5. 9. manufacturing new products out of used products
  6. 10. part of the environment that supplies a material that is useful or necessary for the survival of living things
  7. 11. something that has two different components performing essentially the same task
  8. 12. contamination of the environment with substances that are harmful to life
  9. 14. natural resource that is being used up faster than it can be replaced by natural processes
Down
  1. 1. thermal energy from within Earth
  2. 2. acidic rain or snow that forms when waste gases from automobiles and power plants combine with moisture in the air
  3. 3. natural resource that will not run out, no matter how much of it people use
  4. 7. scientific observation that Earth’s average temperature is increasing
  5. 13. prevents most harmful ultraviolet (UV) radiation from reaching Earth