Waste to wisdom

12345678
Across
  1. 4. -to keep the environment safe from harm.
  2. 7. — The natural world around us.
  3. 8. -to process used materials so they can be used again.
Down
  1. 1. — Unwanted materials that are thrown away.
  2. 2. — Rubbish left in places where it should not be.
  3. 3. — To save and use resources carefully.
  4. 4. —Dirty or harmful waste in the environment.
  5. 5. —Able to continue without harming the environment.
  6. 6. — Decayed plant or food matter used to enrich soil.
  7. 8. — To use something again instead of throwing it away.