Importance of Biosphere

Importance of Biosphere

Importance of Biosphere: 

What is Biosphere?

Biosphere is that part of the earth where life can exist. It is a narrow layer around the surface of the earth. If you visualize the earth to be the size of an apple the biosphere would be as thick as its skin.

biosphere

Biosphere Facts

As you can see the biosphere extends from the floor of the ocean some 11,000 meters below the surface of the earth to the top of the highest mountains, or about 9,000 meters above the sea level.

Its most densely populated region is just above and below the sea level.

 

Biosphere represents a highly integrated and interacting zone comprising of atmosphere, hydrosphere and lithosphere.

 

Life in the biosphere is abundant between 200 meters below the surface of the ocean and about 6,000 meters above sea level.

Importance of Biosphere: 

Biosphere is absent at extremes of the North and South poles, the highest mountains. It is also absent in the deepest ocean, since extremes conditions there do not support life.

Occasionally spores of fungi and bacteria do occur at great height beyond 9,000 meters, but they are not metabolically active. That is why it represent only dormant life.

 

The energy required for the life within the biosphere comes from the sun. The nutrients necessary for living organisms come from air, water and soil and not from outside.

The same chemicals are recycled over again for life to continue. Living organisms are not uniformly distributed throughout the biosphere.

Only a few organisms live in the polar regions.

Other hand the tropical rain forests have an exceedingly rich diversity of plants and animals.

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