Environmental Science 3

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Across
  1. 3. the nonliving parts of the ecosystem, including air, water, rocks, sand, light, and temperature.
  2. 6. a relationship in which different individuals or populations attempt to use the same limited resource.
  3. 8. a piece of DNA that codes for a specific trait that can be inherited by an organism’s offspring.
  4. 9. water that safe for drinking.
  5. 10. the movement of people from rural areas to cities.
  6. 11. the intensity of sound is measured in units.
  7. 12. the long-term prevailing weather conditions at a particular place.
  8. 13. a mixture of smoke and fog.
  9. 15. the set of individuals within a species living in the same place at the same time.
  10. 16. are organisms that cause illness or disease.
Down
  1. 1. The clearing of trees from an area without replacing them.
  2. 2. the number of different species in a given area.
  3. 4. an organism that lives in or on another organism and feeds on it.
  4. 5. a relationship in which one species benefits and the other species is neither harmed nor helped.
  5. 7. the distance from the equator measured in degrees north or south of the equator.
  6. 11. the process of removing salt from salt water.
  7. 14. species a species that is likely to become extinct if protective measures are not taken immediately.
  8. 15. a measure of how acidic or basic a substance is.