The uppermost layer of the earth is called lithosphere and soil is found there which provides food to all the living organisms. The gaseous layer around the earth is called the atmosphere. Hydrosphere is spread upon around 71 per cent part of the earth. In the entire solar system, lithosphere, hydrosphere and atmosphere are found only on the earth. The i iteraction of these three spheres gives rise to biosphere in which all flora and fauna exist. The information which is available to date in context to the universe suggests that the earth is the only planet where life exists. Therefore, it is known as an amazing and blue planet.