Freshwater is any naturally occurring water except for seawater or brackish water. Freshwater is found in lakes, rivers, ice-caps, streams, ponds, icebergs, glaciers, etc. Underground water may also be termed as freshwater. The source of freshwater is precipitation from the atmosphere. Some countries have large freshwater resources. These countries enjoy enormous benefits due to their vast reserves of fresh water.

Brazil has highest freshwater resources in the world which accounts for approximately 12% of the world’s freshwater resources. The Amazon region of this country contains 70% of the total. Despite having numerous fresh water resources, one of the most populous region in Brazil, Sao Paulo, faces severe drought.

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