Fresh water is no more than 2.5-3% of the total water reserve of the Earth.Its main mass is frozen in glaciers and snow cover in Antarctica and Greenland.Another part - many fresh water: rivers and lakes.The third part of the freshwater reserves are concentrated in underground reservoirs, deeper and closer to the surface.

At the beginning of the new millennium, scientists are seriously talking about the shortage of drinking water in many countries.Every inhabitant of the Earth has to spend on food and personal hygiene from 20 to 50 liters of water per day.However, there are countries where drinking water is not enough even to maintain life.Experiencing an acute shortage of water Africans.

The first reason: the increase in populati
on and the development of new areas

According to the UN in 2011 the world population has grown to 7 billion people.The number of people will reach 9.6 billion by 2050.Population growth is accompanied by the development of industry and agriculture.

Enterprises use fresh water for all production needs, while returning to nature is often no longer suitable for drinking water.She gets into rivers and lakes.The level of contamination has recently become critical to the planet's ecology.

development of agriculture in the countries of Asia, India and China exhausted largest rivers in these regions.Development of new lands leads to a shallowing of waters and makes people develop underground wells and deep horizons.

second reason: the irrational use of fresh water resources

Most sources of natural fresh water replenished naturally.Moisture gets into rivers and lakes from atmospheric deposition, some of which goes into underground reservoirs.Deepwater Horizon are non-renewable reserves.

barbaric use of fresh water deprive the person rivers and lakes of the future.Rains do not have time to fill the shoaling waters, while water is often wasted.

commonly used water goes underground through leakage in urban water supply networks.Opening the tap in the kitchen or in the shower, people rarely think about how much water is lost in vain.The habit of saving resources is not yet a date for the majority of people on Earth.

The extraction of water from deep wells can also be a big mistake, depriving future generations of the major reserves of fresh natural water and irreparably upset the ecology of the planet.Out

modern scholars see in water conservation, tighten control over the processing of waste and desalination of sea salt water.If humanity is now time to reflect and take action, our planet will remain an excellent source of moisture for all existing species of life on it.