MCQOPTIONS
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| 1. |
Mantle of the earth crust is |
| A. | A layer with the composition of solid mineral matter |
| B. | A layer with the composition of fluid mineral matter |
| C. | Layer with the composition of semi-fluid mineral matter |
| D. | A layer with the composition of gaseous mineral matter |
| Answer» B. A layer with the composition of fluid mineral matter | |