Asked by Vom

Which of the following statements best defines rocks?

Combinations of minerals and or once living things
combinations of metals and minerals
combinations of once living things only
or combinations of minerals only
Answered by PsyDAG
From Google:

Rocks are composed of grains of minerals, which are homogeneous solids formed from a chemical compound arranged in an orderly manner. The aggregate minerals forming the rock are held together by chemical bonds.
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