Answer: Most rocks contain SiO2 (silica), which is a compound of silicon and oxygen that forms 74%
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Tissue is a group of cells that have similar structure and that function together as a unit. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous. Each is designed for specific functions
They convert carbon into other 'waste' products like oxygen. To put it simply it removes carbon from the carbon cycle.
