Answers

2016-07-26T19:02:11+08:00
The crust is the outer hard layer of the Earth, and is less than 1% of Earth's volume. The crust is made up of different types of rocks; igneous, metamorphic, and sedimentary rocks. Below the crust is the mantle. The upper part of the mantle is made up of peridotite, a rock denser than rocks common in the crust.
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