what is a rock? question of 7th standard
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Explanation:
A rock is a mass of mineral matter that makes up the earth's crust. Rocks can be different colour,size and and texture
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A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks.
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