Incredible Mag

Back To Basic: Re-Examining The Value Of Water

<p>Along with air and light&comma; water is one of the essential perquisites of life&period; They sustain our life and in fact&comma; many creatures on Earth are composed mostly of water&period; On average&comma; human is composed of about 70 percent of water&period; Some fruits&comma; such as watermelon can contain much larger proportion of water&comma; up to 93 percent&period;<&sol;p>&NewLine;<p>Although Earth is essentially a water world&comma; water that is appropriate for human consumption isn’t abundant and can be very difficult or impossible to find in some places&period; Many societies are experiencing scarcity of this enormously valuable resource&period; In fact&comma; people who live next to a large rive or lake could find themselves deprived of appropriate water source for direct consumption&period; Even if germ and bacteria can be destroyed by heat&comma; dangerous chemicals can still make water harmful for human&period;<&sol;p>&NewLine;<p>Water easily dissolves everything it comes in contact with&period; One spoonful of sugar or salt would dissolve relatively quickly&period; This is one reason&semi; clear&comma; potable water is actually a very valuable resource&period; Traces of metals can also be found in contaminated water and they could cause symptoms of poisoning&period;<&sol;p>&NewLine;<p>Unfortunately&comma; we have seen the increasing use of man-made chemicals and they can dissolve quite rapidly in water&period; Many of these chemicals can harm our health&period; As an example&comma; agricultural pesticide could enter nearby irrigation ditch and eventually to the river and wells&period;<&sol;p>&NewLine;<p>The degree of contamination may not be large enough to cause immediate health effects&comma; but these chemical could still lead to fatal consequences in a few years&period; We can improve the quality of water using proper treatment methods&comma; such as boiling or filtration&period; Other more modern techniques include chlorination&comma; ion exchange&comma; ozonation&comma; UV irradiation and reverse osmosis&period; Distillation is an ancient technique that can produce entirely pure water&period;<&sol;p>&NewLine;<p>In reality&comma; water in its purest form isn’t the healthiest and tastiest&period; Water should contain traces of beneficial minerals that nourish life and improve the taste of water itself&period;<&sol;p>&NewLine;<p>There are broad categories of water based on different classifications&period; As an example&comma; there are ground and surface water&period; Surface water is the easiest to obtain&comma; but it can contaminated easily by industrial chemical&comma; animal wastes or simply fine soil&period; Ground water is accessed through wells and usually less contaminated&comma; except in urban areas&period; At the present time&comma; clean water supply is among the most significant problems facing mankind&period;<&sol;p>&NewLine;<p>Although industrialized have improved our quality of life&comma; it worsen our life in some areas&period; In addition&comma; the human population has continued to grow unabated due to improved health conditions and relatively more peaceful conditions&comma; compared to previous centuries&period;<&sol;p>&NewLine;<p>We need to drink at least 8 glasses of water each day and we should value each drop of it&period; The feeling of thirst should be a direct reminder of how valuable water is to our lives&period; Water is available in abundant quantity&comma; but many stranded sailors died of thirst or salt poisoning in the middle of ocean&period;<&sol;p>&NewLine;

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