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Words to know• shabbily • expense• appearance • pronunciation • exquisitely attractive • indication • convince • diction |
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Answer» Answer: Igneous rocks are KNOWN as primary rocks as they are formed through the COOLING and SOLIDIFICATION of magma or lava. The magma can be derived from partial melts of existing rocks in either a PLANET's mantle or crust. All other rocks are derived from them, so they are also called as parent rock. Explanation: Igneous rocks are known as primary rocks as they are formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust. All other rocks are derived from them, so they are also called as parent rock. |
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