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Water pollution

This animation focuses on water pollution and its origins ( for both freshwater and salt  water).
Although natural phenomena not shown here cause water pollution (volcanism, mineral deposits), it is mostly a result of human activities.
Rivers, lakes and oceans are able to rid themselves of contamination by natural cleansing processes,  but only if  the pollutants don't exceed specific threshold values.
We have to preserve our drinking water supplies and  maintain biodiversity  in those ecosystems.

Remember that one third of the world's population do not have safe water to drink.

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