ENVIRONMENT

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Across
  1. 3. make someone or something clean or neat.
  2. 6. provide a substitute for (something that is broken, old, or inoperative).
  3. 9. OUT discard something as unwanted
  4. 11. physical harm that impairs the value, usefulness, or normal function of something.
  5. 12. put (a seed, bulb, or plant) in the ground so that it can grow.
  6. 13. put (someone or something) at risk or in danger.
  7. 15. fix mend or repair something
Down
  1. 1. cause something to fall by cutting it through at the base.
  2. 2. convert (waste) into reusable material
  3. 4. up use all of a stock or supply of something.
  4. 5. up the activity of going around a public place and collecting litter.
  5. 7. contaminate (water, the air, etc.) with harmful or poisonous substances.
  6. 8. unwanted or unusable material, substances, or by-products
  7. 10. use again or more than once.
  8. 14. give (money or goods) for a good cause, for example to a charity.