Igneous rocks: The inside portion of the earth’s surface has high temperature so as to cause fusion by heat at even ordinary pressures. The molten or pasty rocky material is known as the magma and this magma occasionally tries to come out to the earth’s surface through cracks or weak portions.
The rocks which are formed b the cooling of magma are...
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A spillway is a structure constructed at a dam site, for effectively disposing of the surplus water from upstream to downstream. Just af...
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