Water quantity FAQ Frequently Asked Questions
The question library on water related issues
As oceans are very wide and there are multiple to be found on earth, oceans store most of the earth's water. This is apparently 97% of the total amount of water on earth, 2% of which is frozen.
Of all the water on earth, which is 97,14% of the total amount of surface water, only 2,59% is freshwater. Of this 2,59% another percentage is trapped in ice caps and glaciers, which is about 2%. The rest of the freshwater is either groundwater (0,592%), or readily accessible water in lakes, streams, rivers, etc. (0,014%)
Humans mainly consist of water; it is in all our organs and in is transported throughout our body to assist physical functions. When a human does not absorb enough water, dehydration is the result. This is not very surprising, given that 66% of the human body consists of water.
There are four different causes of water scarcity: a dry climate, drought (a period in which rainfall is much lower and evaporation is higher than normal), drying of the soil due to activities such as deforestation and overgrazing by livestock and water stress due to increasing numbers of people that rely on limited levels of run-off.
There are five ways to increase water supplies in a particular area: build dams and reservoirs to store run-off, bring in surface water from another area, withdraw groundwater, convert salt water to freshwater (desalination) and improve the efficiency of water use. These methods all have their pros and cons.
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