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ADVANTAGES OF ROCKS TO HUMANKIND

Rocks are the accumulation of minerals in a solid-state. However, rocks include substances like clay, sand stone, shells, and corals. Rocks that contain metallic compounds are called ores. The rocks of the crust are made up of eight main chemical elements; oxygen, silicon, iron, aluminum, calcium, potassium, sodium, and magnesium. The following are values of …

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