Differentiate between intrusive igneous rocks and extrusive igneous rocks.
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Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.
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- Extrusive igneous rocks come from lava,forming at the surface of the earth and cooling quickly,meaning they form very small crystals.
- Intrusive igneous rocks come from magma,forming deep underground and taking longer to cool,meaning they from larger crystals.
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