Importance of earth's hydrosphere

What is hydrosphere?

The hydrosphere is often called the "water sphere" as it includes all the earth's water found in oceans, streams, lakes, the soil, groundwater, and in the air. The hydrosphere interacts with, and is influenced by, all the other earth spheres. It is the home for many plants and animals. The ocean serves two main purposes in the climate system. First, it is a large reservoir of chemicals that can contribute to the greenhouse effect in the atmosphere and energy absorbing 90% of the solar radiation which hits the surface. This reservoir changes very slowly limiting how fast the climate can change. Second, it works with the atmosphere to redistribute the energy received from the sun such that the heat in the topics, where a lot of energy is received from the sun, is transferred toward the poles, where heat is generally lost to space.

What is earth?

is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the World, the Blue Planet. The only planet were the people can live and multiply.

The earth's hydrosphere is the water on/or surrounding its surface.
Some examples:

1.   Oceans - the biggest bodies of water that cover almost three-fourths of the earth's surface.

2.   Seas - bodies of salt water.

3.   Lake - an inland body of water of considerable size.

4.   Waterfall - a steep fall of water from a height.

5.   Gulf - a portion of an ocean or sea partly enclosed by land.

Importance of earth’s hydrosphere

Ø      It is essential to life, without water humans would die in a week. In addition, the human body is mostly water. Approximately, the human body is made up of 60% water, blood about 50% while the brain is 77% water. The hydrosphere plays a very important role in the evolution of life, as well as in weather, and erosion. The hydrosphere provides an important place for many animals and plants to live. Helping to regulate temperatures on earth so that they stay within a range that is acceptable for life to exist. Ocean currents also help to disperse heat.