Question

how are igneous rocks are formed

Answer 1

Extrusive igneous rocks cool and solidify quicker than intrusiveigneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate.

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Answer 2

igneous rocks are formed under the action of compaction and decomposition of agents like winds , water etc