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2. Fill in the blanks.a. Another name for the core___ is due to the presence of nickel and iron. b. Igneous rocks are also known as_____rocks as they were the first rocks to form. c. Intrusive igneous rocks are usually______grained.d. Metamorphic rocks are_____ often due to the great effect of heat and pressure. e. Rock contain_______that give us important insights into the past.o |
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