Environment

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Across
  1. 2. To use something again
  2. 3. To collect and treat used objects and materials that are ready to be thrown out in order to produce materials that can be used again
  3. 5. Damage caused to water, air by dangerous substances
  4. 6. To put a plant into the ground or into a container of soil so that it will grow
  5. 7. To make a tree or other plant fall to the ground by cutting it near the bottom
Down
  1. 1. A container for waste that will be recycled, for example, paper or glass
  2. 4. Small pieces of rubbish that have been left lying on the ground in public places