Environmental Chemistry Review

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Across
  1. 2. Adding calcium carbonate to neutralize acidified lakes
  2. 3. measure of concentration of a chemical
  3. 4. Measurement used to compare toxicity; dose required to kill 50% of a test population
  4. 6. Energy source for metabolism
  5. 9. Slippery, bitter-tasting chemical
  6. 10. Heat, Noise, Chemicals, anything that alters the environment and may cause harm to organisms
  7. 12. Iron deficiency leading to fatigue and pale skin
  8. 14. Breakdown of substances by microorganisms
  9. 17. Variable that is changed to observe and test the hypothesis
  10. 19. Amount of a substance present in a given volume
  11. 20. An area of porous rock below ground level which can hold useful amounts of water
  12. 22. Substance with a pH below 7
  13. 23. Carbon-containing nutrients needed by living organisms
  14. 24. Excess fertilizer carried by rainwater to pollute ground and surface water
Down
  1. 1. The use of living organisms to help clean up areas of pollution
  2. 5. Structural molecule, one of the four organic macronutrients
  3. 7. Devices that use calcium oxide as a sorbent to remove sulfur dioxide from factory emissions
  4. 8. Pollutants that remain in the environment for long periods
  5. 11. The process that lowers pollutant concentration by spreading it through water
  6. 12. Bubbling oxygen for bacterial decomposition to help break down smaller waste
  7. 13. The increase of pollutant concentration as it moves up a food chain
  8. 15. Potent insecticide that caused harm through bioaccumulation and collateral food web destruction
  9. 16. Chemicals essential for growth and health
  10. 18. Scale used to determine whether a substance is acidic, basic, or neutral
  11. 20. Toxicity of a material that causes harm after a single exposure
  12. 21. Materials generally derived from non-living sources