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Across
  1. 4. Breathing in polluted air can make us
  2. 5. Smoke from cars and factories cause air
  3. 6. The air that we breathe should be
Down
  1. 1. When the air is polluted, it’s a good idea to wear a ______________________.
  2. 2. Diseases cause by breathing in air carrying germs is called ________________ diseases.
  3. 3. Using ______________________ transport helps us reduce air pollution.