Water pollution

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Across
  1. 4. Radioactive decay is the emission of energy in the form of ionizing radiation
  2. 5. A biological community of interacting organisms and their physical enviroment
  3. 9. a natural fuel such as coal or gas, formed in the geological past from remains or living organisms
  4. 12. A compound or substance that has been purified or prepared
  5. 13. The soroundings or conditions in which a person, animal, or plant lives or opperates
  6. 16. Wasted or spoiled food and other from kitchen or household
  7. 17. Eliminated or discared as no longer useful or required after the completion of a process
  8. 18. very harmful and poisonous
  9. 19. A synthetic material that can be molded into a shape in a elastic form
Down
  1. 1. Causing or likely to cause harm
  2. 2. A substance or things that is harmful to the enviroment
  3. 3. The action or process of converting waste into a reusable material
  4. 6. waste water
  5. 7. A coloress,transparents,liquid that forms the seas,lakes,rivers,and rain
  6. 8. Putting an end to by damaging or attacking
  7. 10. A place to dispose of trash by burying it in soil
  8. 11. Trash such as paper,cans,and bottles that are left in public places
  9. 14. Leakage of petroleum onto the surface of a large body of water
  10. 15. Discarded matter