Human Impact on the Ocean

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Across
  1. 4. chemical used to kill insects
  2. 7. changes in the environment caused by heated water
  3. 12. the increase of pollutants as you go up the food chain
  4. 14. species that face extinction but are not in immediate danger
  5. 15. chemicals that break up oil spills so they can spread out in the water
  6. 16. species with low numbers that face extinction
  7. 17. species that are in immediate danger of disappearing
  8. 18. a metal with a relatively high density
  9. 19. substance from land that can carry fertilizers and harmful substances into the ocean
Down
  1. 1. susbtances that remain in the environment for years
  2. 2. warm highly salty water that is a by-product of desalination plants
  3. 3. a property exhibited by certain atoms that spontaneously emit particles
  4. 5. the introduction by humans of harmful substances into the environment
  5. 6. the solid wastes that are taken out of sewage
  6. 8. human-induced extinction
  7. 9. organisms that are no longer in existence
  8. 10. the global system of evaporation and condensation of substances
  9. 11. very small pieces of plastic that are commonly found in toothpastes and skin scrubs
  10. 13. capable of being broken down by bacteria