Question

what are the sources of freshwater on earth

Answer 1

The source of almost all fresh water is precipitation  from the atmosphere, in the form of mist, rain and snow. Fresh water falling as mist, rain or snow contains materials dissolved from the atmosphere and material from the sea and land over which the rain bearing clouds have traveled. In industrialized areas rain is typically acidic because of dissolved oxides of sulphur and nitrogen formed from burning of fossil fuels in cars, factories, trains and aircraft and from the atmospheric emissions of industry. In some cases this acidic rain results in pollution of lakes and rivers and glacier

In coastal areas fresh water may contain significant concentrations of salts derived from the sea if windy conditions have lifted drops of seawater into the rain-bearing clouds. This can give rise to elevated concentration of sodium , chloride , magnesium  and sulfate  as well as many other compounds in smaller concentrations

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Answer 2

Major sources of freshwater in the city town village where we live is underground water