Water pollution vocabulary

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Across
  1. 5. Another word for a polluted
  2. 7. Describes things related to the home
  3. 9. A chemical with symbol N, which plants need to grow
  4. 10. Another word for a pollutant or poison
  5. 11. Chemicals that kill bugs
  6. 13. Human waste (from the toilet)
  7. 14. The water that flows off land when it rains
Down
  1. 1. A word that means the amount of a chemical found in water (for example 10 parts per 100 litres)
  2. 2. Another word for tiny
  3. 3. A mix of chemicals added to plants to help them grow
  4. 4. Describes things related to factories
  5. 6. Tiny bacteria
  6. 8. Water escaping slowly
  7. 12. Watering crops on a farm