Monday, 18 February 2013

Land Resources


      Land Resources

The Importance of Land
The human civilization has thrived on land.
Land is used for agriculture.
Land contains huge amount of mineral deposits.
It also contains water in the form of underground water.
Most of the animals find their habitat on land.
Land directly or indirectly provides all the resources required to fulfil the basic needs of humans: food, cloth, and shelter.
Land Degradation:-
Lowering of  the quality of land is commonly referred to as land degradation.
Causes of Land Degradation:-
Mining
Urbanization
Deforestation
Overgrazing
Construction of dams and canals
Excessive use of fertilizers
Dumping of industrial and domestic waste 


 
 

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Overview of Welding Technology