Vesivarat
Makea vesi on niukka luonnonvara
Veden kiertokulku ja vesivarat
- Precipitation Quiz
- GOOD.is | Interactive Infographic: Your Daily Dose of Water
- http://www.biology.ualberta.ca/facilities/multimedia/uploads/alberta/watercycle.html
- UNESCO Water, sustainable development and conservation of freshwater resources in the world
- First-ever global map of surface permeability informs water supply, climate modelling
- Category:Bodies of water – Wikimedia Commons
- Worldometers – Maailman tilastot reaaliajassa
- Vesi
World Mapper:
By USGS [Public domain], via Wikimedia Commons