air and water pollution

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Across
  1. 4. five types of air pollution are carbon monoxide,oxides of nitrogen,ozone and ____________.
  2. 5. Main cause of air pollution is ______.
  3. 7. what does the oxides of nitrogen cause?
  4. 9. water pollution is the _________ of water sources by substances which make the water unusable for drinking,cooking and cleaning.
  5. 11. many industries dump industrial waste,such as ___________,into bodies of water before treatment.
  6. 15. ultimately to improve the quality of the ________ and to encourage the sustainable management of resources.
  7. 17. poor _________ has harmful effects on human health and particularly the respiratory.
  8. 19. what gas is responsible for global warming?
  9. 20. Source of air pollution can result from three type agricultural,transport and __________.
  10. 21. Water pollution also __________ into the soil that may impact the growth of plants or other food.
Down
  1. 1. household combustion devices,motor vehicles,___________ and forest fires are common sources of air pollution.
  2. 2. ________ is the worst for your health.
  3. 3. what the cause of water pollution?
  4. 6. and ________.
  5. 8. what is the effect of dust and soot?
  6. 10. common air pollutants three pollution carbon monoxide,sulfur dioxide_________.
  7. 12. It may cause dizziness,headaches and even death when inhaling large amount.
  8. 13. all sulfur dioxide,carbon monoxide,oxides of nitrogen ,dust and soot can cause _________.
  9. 14. ______ is the release of substances into bodies of water that makes water unsafe for human use
  10. 16. It cause eye irritation ,breathing difficulties,nose,throat and lung.
  11. 18. air pollution can cause three effect headaches,