environmental studies

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Across
  1. 5. the frequency at which an object naturally vibrates
  2. 6. a mirror system that reflects incoming light onto a single point
  3. 8. radiation rays that travel long distances
  4. 9. the process where the presence of two materials produces a greater effect
  5. 10. which protocol intended to set targets to reduce greenhouse gas emissions
  6. 11. a water body with a low nutrient level
  7. 12. involves a fine water spray that washes out suspended solids
  8. 15. used to deflect and absorb sound
Down
  1. 1. the unit of sound used to monitor noise pollution
  2. 2. a pesticide that is absorbed and transported around a plant in the sap
  3. 3. radioactive isotope that is naturally occurring in rocks
  4. 4. a substance that causes cancer
  5. 7. Organophosphates
  6. 13. a measure of differing toxicities of a substance on different organisms
  7. 14. a fuel where the nuclei of he atoms can be split my nucleus bombardment