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Across
  1. 2. Which pesticide was used in farming but was banned because it harms the nervous system?
  2. 3. Which group of industrial chemicals was used in electrical equipment but is now banned?
  3. 4. What type of pollution builds up in animals and humans over time?
  4. 6. Which toxic chemical forms as a byproduct of burning waste and certain industrial processes?
  5. 7. What is the process where chemicals move through the food chain, becoming more concentrated at higher levels?
  6. 10. Which toxic chemical, closely related to aldrin, was once used on crops but later banned?
  7. 11. What does "POP" stand for in environmental science?
Down
  1. 1. Which international agreement was created to reduce or eliminate POPs?
  2. 3. Which chemical was used to treat wood but is now banned because it causes health problems?
  3. 5. What is the name of the dangerous pesticide once used on fire ants?
  4. 8. Which insecticide, used to control termites, was later banned due to its toxicity?
  5. 9. Which large region, far from pollution sources, still suffers from POP contamination due to atmospheric movement?
  6. 10. Which pesticide, once used to kill mosquitoes, was banned because it harms wildlife?