What element may be stored in sandstone for millions of years?\nOptions:\n- (A) copper\n- (B) calcium\n- (C) carbon\n- (D) chemicals\n- (E) heat\n- (F) iron\n- (G) rock\n- (H) fossils Think carefully first, then make a decision. My thoughts:
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Carbon may be stored in sedimentary rock for millions of years. Sedimentary Rocks One of the commonest sedimentary rocks is sandstone. Carbon may be stored in sandstone for millions of years. So the answer is (C).
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