A) black soil
B) lava flows
C) granite
D) sedimentary rocks.
Correct Answer: D
Solution :
: Sedimentary rocks are formed mostly of materials which were moved by water from their place and were deposited in a new location as sediment under water. The exposed surface of the earths crust has been eroded continually and broken into fragments, these fragments are then transported by streams and rivers etc. and deposited in lakes and seas where they are no longer subjected to erosion, but form sedimentary rocks. In various layers of these rocks fossils are found. Petrifaction is the commonest method of fossilization and includes burial of dead organisms in the sediments.
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