Sunday, July 31, 2011

"Hydrosphere and it's importance"

As we all know, Earth is the only planet that could able to support life. It has the right distance from the sun suitable for the life of existence. It is also composed of the atmosphere that has the right amount of gases that the life need to exist. The planet Earth also has WATER which covers about 70% in Earth's surface. In fact, Earth is often called "Blue Planet" because it ts mostly covered of water, that made up of freshwater in rivers and lakes, the saltwater of the sea oceans and estuaries, the groundwater and water vapor and together, all these water bodies are called HYDROSPHERE.



The Hydrosphere represents one components of the earth's system, operating in conjunction with the solid crust which is the lithosphere and the air that envelopes the planet which is the atmosphere. It really reflects the abundance and importance of the water on earth. Water is constantly being cycled through it's various manifestation and components of Earth's system by means of Hydrological cycle. The water is evaporated through ocean surface and distributed over the earth as water vapor and it returns to the earth through precipitation.
As humans, who were one of the users of the water, we sometimes to take our hydrosphere for granted and forgot the role of this part of the earth that plays in keeping us alive.
There are some important functions of the Hydrosphere that we need to know and understand. One of the most important of water is that it is essential to life. The daily use of human in daily living. Our body is consist of water. Approximately, human body is consist of 60% of water, blood is about 50% and our brain is 77% of water. It shows how really water essentials to us humans. Water also used as a domestic needs such as used in washing and cleaning. Without water we can't survive and the plants and animals we take as our food will not exist.
Hydrosphere provides a habitat, an important place for many animals and plants to live in Industry and even in forest. Many gases, nutrients, as well as ions are dissolved in water. The presence of these substances is critical for life existence because of water.
It also uses in regulating climate, one of water's unique characteristics is its specific heats which means the water takes a long time to heat up and a long time to cool down. It is helping in regulating the temperatures on earth so that they will stay within the range that is important for life to exist. One of this is the ocean currents help to disperse heat.
Water is also help in generating electricity through Hydro-power.

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