Environment
Environment in ts true sense can be defined as all that surrounding us environment is our basic life support system it provides the air we breath the water we drink the food we eat and the land where we live it also includes also plant animal large variety of man- made things which are necessary for our living thus environment has both natural and man-made element the natural environment can b further bifurcated into two groups the physical environment and biological environment the physical environment includes all non living things like land, water and air the biological environment includes all living things such as plant and animal.man is the most important component of the biological environment who satisfied all the required needs from both part group of the environment two component of natural environment that is physical and biological are largely interdependent and can not be separate any major change in the physical environment is bound o bring the change in the accompanying biological environment the change can be sudden and gradual for example the development soil takes year together and cannot be visualised through our sense on the other hand and changes and very sudden like the change brought about by the occurrence of an earthquake or volcano etc.
four sphere of environment
1-Lithosphere
2-Atmmosphere
3-Hydrospere
4-biosphere
1-lithosphere image
The literal meaning of lithosphere is the sphere of rock the earth solid layer are called lithosphere the lithosphere is about 100 km in thickness the uppermost part of the lithosphere is composed of rock rich in silica and almunium are called sail below the sail layer the rock are mainly rich in silica and magnesium are called sima which is generally found below the bottom of ocean basin thus lithosphere is the part of the earth which provides us land over which live it provides soil from the plant and is also a sources of all mineral wealth.
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