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1. |
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called |
A. | granite |
B. | basalt |
C. | igneous rocks |
D. | sedimentary rocks |
Answer» D. sedimentary rocks | |