badriya and water

Water is the most important thing that we have in our life next to air. It is made up of oxygen and hydrogen. People will die without water.

Written by: Badriya Ali AL Wahibi

water filter

A water filter removes impurities from water by means of a fine physical barrier, a chemical process or a
biological process. Filters cleanse water to various extents for irrigation, drinking water, aquariums, and swimming pools.

Filters use sieving, adsorption, ion exchanges and other processes. Unlike a sieve or screen, a filter can remove particles much smaller than
the holes through which the water passes.

http://en.wikipedia.org/wiki/Water_filter

Benefits of water

The human body, which is made up of between 55 and 75 percent water (lean people have more water in their bodies because muscle holds more water than fat), is in need of constant water replenishment.

Your lungs expel between two and four cups of water each day through normal breathing - even more on a cold day. If your feet sweat, there goes another cup of water. If you make half a dozen trips to the bathroom during the day, that's six cups of water. If you perspire, you expel about two cups of water (which doesn't include exercise-induced perspiration).

A person would have to lose 10 percent of her body weight in fluids to be considered dehydrated, but as little as two percent can affect athletic performance, cause tiredness and dull critical thinking abilities. Adequate water consumption can help lessen the chance of kidney stones, keep joints lubricated, prevent and lessen the severity of colds and flu and help prevent constipation.

http://www.shapefit.com/water-benefits.html

list of water sport

water pollution

http://en.wikipedia.org/wiki/Water_pollution



Water pollution is a major problem in the global context. It has been suggested that it is
the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily.An estimated 700 million



Indians have no access to a proper toilet, and 1,000 Indian children die of diarrhea sickness every day.Some 90% of China's cities suffer from some degree of water pollution,and nearly 500 million people lack access to safe drinking water. In addition to the acute problems of water pollution in developing countries, industrialized countries continue to struggle with pollution problems as well. In the most recent national report on water quality in the United States, 45 percent of assessed stream miles, 47 percent of assessed lake acres, and 32 percent of assessed bay and estuarine square miles were classified as polluted.Water is typically referred to as polluted when it is impaired by anthropogenic contaminants and either does not support a human use, like serving as drinking water, and/or undergoes a marked shift in its ability to support its constituent biotic communities, such as fish. Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water.

Water cycle

The water cycle (known scientifically as the hydrologic cycle) refers to the continuous exchange of water within the hydrosphere, between the atmosphere, soil water, surface water, groundwater, and plants.
Water moves perpetually through each of these regions in the water cycle consisting of following transfer processes:

• Evaporation from oceans and other water bodies into the air and transpiration from land plants and animals into air.
• Precipitation, from water vapor condensing from the air and falling to earth or ocean.
• Runoff from the land usually reaching the sea.

Most water vapor over the oceans returns to the oceans, but winds carry water vapor over land at the same rate as runoff into the sea, about 36 TTS per year. Over land, evaporation and transpiration contribute another 71 TTS per year. Precipitation, at a rate of 107 TTS per year over land, has several forms: most commonly rain, snow, and hail, with some contribution from fog and dew. Condensed water in the air may also refract sunlight to produce rainbows.
Water runoff often collects over watersheds flowing into rivers. A mathematical model used to simulate river or stream flow and calculate water quality parameters is hydrological transport model. Some of water is diverted to irrigation for agriculture. Rivers and seas offer opportunity for travel and commerce. Through erosion, runoff shapes the environment creating river valleys and deltas which provide rich soil and level ground for the establishment of population centers. A flood occurs when an area of land, usually low-lying, is covered with water. It is when a river overflows its banks or flood from the sea. A drought is an extended period of months or years when a region notes a deficiency in its water supply. This occurs when a region receives consistently below average precipitation.

http://en.wikipedia.org/wiki/Water

what is the water

Water is a chemical substance with the chemical formula H₂O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state, water vapor or steam.
Water covers 70.9% of the Earth's surface,^[  and is vital for all known forms of life. On Earth, it is found mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation.^[3] Oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers, lakes and ponds 0.6%. A very small amount of the Earth's water is contained within biological bodies and manufactured products.