The desalination process produces drinking water from seawater.
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Groundwater and aquifers are types of underground waters.
Evaporating surface water forms clouds of various shapes from which water falls back to the surface as precipitation.
Common salt is dissolved by water: polar water molecules form a coat around the ions.
The protective embankment, or, in case of minor floods, the summer dike ensures the protection against flood damage.
Karst formations include dolines and dripstones.
Physical properties, as well as the flora and fauna of the ocean change with depth.
Common salt (or table salt) is one of the most important sodium compounds, indispensable for living organisms.
System that satisfies consumers’ demands of water supply, wastewater disposal, electricity, heat and gas supply and telecommunication.
Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.
The main sources of water pollution are industry, agriculture and urban areas.
The water supply system provides clean and safe drinking water for the consumers.
An air conditioner cools the air inside by drawing heat away and releasing it outside.
This animation demonstrates the structure of water towers.
This animation demonstrates how a refrigerator works.
The Great ocean conveyor is a planet-wide system of ocean currents, which has a great influence on the Earth´s climate.