Match the following:
| a. Core | 1. is the outermost solid shell of Earth containing all the life |
| b. Mantle | 2. is the central region of Earth extending from fourteen hundred to eighteen hundred miles from the Earth's center |
| c. Crust | 3. is the central region of Earth consisting of hot, dense, semisolid rocks and is about 2,900 kilometers thick |
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