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igneous rocks are formed in two ways through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

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Answer:

two ways by which the igneous rocks are formed:

  • Igneous rock is formed by the cooling and solidification of the magma below the earth's surface.
  • Igneous rock is also formed on the surface by volcanic activity.

Explanation:

Igneous rocks are of two types

  • Intrusive igneous rocks
  • Extrusive igneous rocks

Igneous rocks are formed by two ways

  • Igneous rock is formed when the hot molten magma cools slowly and solidifies below the earth's surface.

This type of rock is called intrusive igneous rock.

example are granite and Diorite.

  • When the hot magma present inside the earth, flows out to the surface by the volcanic activity and cool rapidly to form extrusive igneous rocks.

Examples are basalt and andesite.

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