UNIT 7 - POLLUTION

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Across
  1. 4. growing or living in, on or near water
  2. 6. a substance that can make people or animal ill or kill them if they eat or drink it
  3. 7. a chemical used for killing pests, especially insects
  4. 9. lasting forever
  5. 11. water that is found under the ground in soil, rocks, etc.
  6. 12. a substance that pollutes something, especially air and water
Down
  1. 1. a chemical that is poisonous to plants, used to kill plants that are growing where they are not wanted
  2. 2. to get rid of something you do not want,
  3. 3. to make the meaning of something clearer by using examples, pictures, etc.
  4. 5. to make a substance or place dirty
  5. 8. a piece of soft material that you put into your ear to keep out noise or water
  6. 10. connected with heat