A crab dies and becomes buried beneath the mud in the bottom of the ocean. The mud fills in tightly around the crab's shell. Over many years, the shell decays and the mud hardens. This leaves a hollow space that is the same shape as the crab's original shell.
A. Amber
B. Mold
C. Cast
D. Imprint
E. Petrified
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A crab dies and becomes buried beneath the mud in the bottom of the ocean. The mud fills in tightly...
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