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Answers
Answer:
Marat ba abhi bahut maar
Answer:
igneous rocks are hard because Igneous rocks are formed by melting and cooling of magma originated from volcanic eruptions. These may be formed by diastrophism and volcanism. These rocks are strong, crystalline and dark in colour. These may be extrusive and intrusive on the surface and beneath the crust respectively.
Sedimentary rocks have layers because of different depositions of sediments (small broken pieces of rocks) over time. The different groups of sediments could have been deposited through wind, water, ice, and/or gravity at different intervals of time and compacted on top of each other, until they create a sedimentary rock that has several different types of sediments (possibly from different rock types) in the form of layers.
sorry I don't know the answer of first one