Environmental protection

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Across
  1. 2. Turn old things into new things.
  2. 5. A container for throwing rubbish.
  3. 6. Trees and flowers
  4. 7. Dirty air or water caused by humans.
Down
  1. 1. The place where fish and whales live.
  2. 3. Rubbish left on the ground.
  3. 4. Birds, dogs, cats and fish.
  4. 6. Material used to make most bottles and bags.