Examlex
Choose the one alternative that best completes the statement or answers the question.
- cm can also be expressed in mm as
Slate
Slate is a fine-grained metamorphic rock that can be split into thin layers, often used for roofing, flooring, and historical writing tablets.
Nonmetallic Mineral
Minerals that lack metallic properties, often used in construction and manufacturing, such as sand, gravel, and precious stones.
Phosphates
Mineral salts containing the phosphate ion, used in fertilizers, detergents, and as a dietary supplement.
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