Green Schools and Environmental Health

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Across
  1. 5. To make unfit or harmful for living things.
  2. 6. Product used on crops to kill insects and other pests.
  3. 7. The saving of resources.
  4. 9. All the living and nonliving things around you.
  5. 11. Reducing waste before it occurs.
  6. 12. Easily broken down in the environment.
Down
  1. 1. A gas made of three oxygen atoms.
  2. 2. To change items in some way so that they can be used again.
  3. 3. The water that collects under the Earth’s surface.
  4. 4. Human waste, garbage, detergents, and other household wastes washed down drains and toilets.
  5. 8. Dirty or harmful substances in the environment.
  6. 10. Huge specially designed pits where waste materials are dumped and buried.