Pollution

How do you think, what pollutes the water the most?

  1. Factories
  2. oil
  3. industrial sewage
  4. Factories
  5. trasos, nitratai, nuotekos is ivairiu vietu
  6. nitratai, fosfatai, nuotekos
  7. agriculture
  8. lietuvi6kai jei galima:)
  9. yes
  10. factories