Shell+Aggregates

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Why is this rock hard?



**D. Water mixed with the material in the rock, causing the material to harden **
**bold** = correct answer

Question Identifier : GCI_2011_095 Designed for: //Non-Science// Primary Author(s): //J. Libarkin, S. Anderson// Contributing Author(s): //C. Steffke// Misconception's Reference: //Original GCI (https://www.msu.edu/~libarkin/GCI_PUBLICATIONS.html)//

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