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Which statement about chert is true? A. It can only form chemically. B. It can only form organically. C. It can form organically or chemically.

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The answer would be C.It can form organically or chemically.

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User Beporter
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Chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. With this little bit of information, you can come to the conclusion that your answer is C.  
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User Katriel
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