Sign up
Logout
Home ► Speaking ► Written
Written questions
  • Question:
  • Front side
  • Back side
    • Question limit
    1. Water services

    2. Groundwater aquifers

    3. Demand for water

    4. Hydropower

    5. Water-related diseases

    6. Population explosion

    7. Food production

    8. Reduced water use

    9. Soil quality

    10. Ancient Greeks and Romans