THE ENVIRONMENT

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Across
  1. 3. To destroy something, to cause harm.
  2. 5. Harmful and poisonous substances cause this.
  3. 6. Convert waste into reusable material.
Down
  1. 1. Protection of the environment.
  2. 2. A place where an animal lives.
  3. 4. To keep something safe.
  4. 7. To put someone or something in danger.