4. Give reasons.
(iii) Limestone is changed into marble.
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Answer:
marble is a metamorphic rock formed by alteration of limestone
Explanation:
both have the same chemical formula as CaCo3 it is a form of calcite
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Answer:Marble is a metamorphic rock formed by the alteration of limestone by heat and pressure. The calcite in the limestone changes and fossils and layering in the original limestone disappear as interlocking grains grow. If the limestone is pure, a white marble is formed.
Explanation:
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