Pollution

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Across
  1. 3. Substances that when dissolved in water are capable of reacting with a base to form salts and release hydrogen ions.
  2. 5. An inorganic compound whose only negative part is the elemnt oxygen.
  3. 6. waste that humans put down drains
  4. 7. Energy transmitted in the form of electromagnetic waves or subatomic particle
  5. 8. air pollution
  6. 9. dust heap
  7. 10. litter
  8. 12. City with many radiation
  9. 13. cheeseparings
Down
  1. 1. international environmental organization
  2. 2. not used for human garbage
  3. 3. any effect caused by humans
  4. 4. poisonous materials
  5. 11. something that causes damage to the environment
  6. 13. of top concern