Answers

2016-03-26T19:18:44+05:30
They are originated due to geological formations and several other process like weathering , erosion , and depositions
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2016-03-27T11:02:12+05:30
In the ancient days there was only one huge land mass called pangea.
Due to many volcanic eruptions and few geological disturbances in the land Angara and Gondwana lands formed.
Due to the movement of these plates called as plate tectonics the collisions took place and then these two land masses also got seperated to form the present day world

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