define - lithosphere , hydrosphere, atmosphere , biosphere , exosphere , thermosphere , mesosphere , stratosphere , troposphere .

Lithosphere: The outer part of the earth, consisting of the crust and upper mantle, approximately 100 km (62 mi.) thick. lithosphere [ˈlɪθəˌsfɪə].

Hydrosphere: all the water bodies present on the earth are called as Hydrosphere example: Ocean, Sea, Lakes etc....

Atmosphere: The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation).

Biosphere : The area's or the land part which are present on the earth from which on two pesent of land is capable to live is called Biosphere in other words the place where life can exist easily.

Exosphere: Exsophere is nothing but a part vast empty space which is upper than 600km from earth is called as Exsophere.

Thermosphere : the Thermosphere is a vast empty space which between 120/600kms away from earth.

Meosphere : meosphere is between 60/120kms away from earth.

Stratosphere: Stratosphere is between 25/60kms away from earth.

Tropsphere: Troposphere is a placce which is 6 kms away from earth.