In what ways has “water” become a global issue in the late 20th century?

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In what ways has “water” become a global issue in the late 20th century?

As the water is a chemical substance vital for all forms of life, the lack of it is nothing less but a global issue.

Water molecule is composed by 2 atoms of hydrogen attached to a single one of oxygen and its chemical formula is H2O . It is odorless, colorless (in small portions) and tasteless, and is found liquid atambient pressure and temperature. It also can be found solid (called ice), and in gas form (named vapor). This substance covers the 70.9% (361.132 million sq km) of the earth’s surface and is largely found in oceans which are the 96% of the earth’s surface. The 97% of the water is located on oceans, glaciers and ice caps from the poles hold the 2.4% and rivers, lakes, ponds, just have 0.6% of theworld’s water.

Water keeps moving constantly through the globe due to it’s cycle. It consists on 3 main steps which are evaporation (that happens when the heat transforms it from liquid to gas), precipitation (when it condensates on clouds and passes from vapor to liquid), and runoff (which leads it mainly to oceans again so the cycle can start over)

Water is vital for the human body andall forms of life because all species have a certain percentage of water in their bodies. For example, a cell of Escherichia coli contains 70% of water, a human body 60–70%, plant body up to 90% and the body of an adult jellyfish is made up of 94–98% water.

Jeffrey Utz, a Master Degree on Neuroscience in Allegheny University states in his book:

“Different people have different percentages oftheir bodies made up of water. Babies have the most, being born at about 78%. By one year of age, that amount drops to about 65%. In adult men, about 60% of their bodies are water.”

The drink of clean water is essential to humans and to keep life because it has many distinct properties that are critical to the life proliferation that differentiates it from other substances. All know forms oflife depend on water and it is vital because it is used as solvent in different body’s solutes dissolve and it is also part of metabolic processes. It is said that one should intake 1 Lt for each 1000kcal spent daily in order to keep balance of electrolytes in the body .

Despite that access to safe drinking water has been improving over the last decades, It has also turned available only forprivileges and “although the absolute quantities of freshwater on Earth have remained approximately the same, the uneven distribution of water and human settlement continues to create growing problems of freshwater availability and accessibility” states UNEP (for a detailed graphic of this statement, check graphic below).

It has even been stated that “there is a clear correlation between access to safe water and GDP per cápita”
Through many years, man has seen the water as a gift from God, and wrongly convinced about an endless supply of it, man has wasted and contaminated it, used it inadequately, dumping garbage, toxic wastes, spilling oil, throwing plastics on it andeverything that was obstructing his goals until realized that it wasn’t going to stay there forever useful and clean, and that the end of it could be closer that one could have imagine ever.
Despite the incredible amount of water located on earth, the 97.2% is on the oceans, and is too salty that it can’t be drink because it could lead to intoxication. Another 2% of Earth’s water is located on thepoles, but frozen. So it is not useful to human consumption. “The tiny usable fraction that is left is neither evenly distributed nor properly used…”
There has been constant drought during the last middle of the past century and the decade that has run in this. But it is just seen as normal by some countries that has permanently fight for this resource like Arabs and Israelis fight for the...