Question

how were the rocks formed​

Answer 1

Answer:

There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. Sedimentary rocks are formed from pieces of other existing rock or organic material.

Answer 2

Rocks are those materials which are obtained from the earth's crust. They include not only the hard materials such as granite and marble, but also soft and loose materials such as chalk, clay, sand and salt...

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