When big rocks break down into small fragments (or sediments),the fragments are transported and deposited by factors like water and wind. The loose sediments compress and harden over the years...
(c) The layers of Sedimentary rocks become thicker and heavier due to deposition and create pressure on the marine creatures under it, which in turn change the carcasses into crude...
(a) The tank irrigation is practised mainly in the peninsular India due to the following reasons
1. The undulating relief and hard rocks makes it difficult to dig canals and wells.
2....