The Essential in Life: WATER

Nothing on our planet can survive without water. It covers 70% of the surface and about 60% of our body is composed of nothing but water.

Water. It's found everywhere on Earth, from the polar ice caps to steamy geysers. And wherever water flows on this planet, you can be sure to find life.

"When we find water here on Earth — whether it be ice-covered lakes, whether it be deep-sea hydrothermal vents, whether it be arid deserts — if there's any water, we've found microbes that have found a way to make a living there," said Brian Glazer, an oceanographer at the University of Hawaii at Manoa, who has studied astrobiology.

There are organisms on Earth that do not need oxygen to live. They metabolize hydrogen or methane or several other compounds. There is life at the bottom of the oceans which have never seen the sun and get all of their energy from hydrothermal vents on the seafloor.

But all life on Earth shares one thing in common: we all need water to live.

Properties of water:

Water is a liquid across a wide range of temperatures on Earth. A liquid is a much better transport medium for nutrients and other life-necessary compounds than a solid. It just happens that most of the water on Earth can exist in its liquid form.

Water is also a great solvent. It has been called the universal solvent because so many different kinds of substances can be dissolved in water. All life needs to take in substances to generate energy and flush out waste products and toxins. Due to the properties for dissolving all kinds of substances, it makes an ideal medium for both tasks.

Water also acts on the external of our body. As we perspire, we are using the evaporation of water to on the skin surface to regulate the body temperature to prevent overheating.

Water is denser that the regular human body therefore we experience buoyancy in water allowing water to carry the human weight. This allows a patient to retrain muscles and joints in a soothing setting where the body can heal faster and exercise more easily.

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