How do the pieces of hard candy model the formation of new rock?

When magma cools, it hardens to form igneous rock. How they figure it out: They observe rock samples and explore the Simulation, finding different ways to make rock form. They model the formation of sedimentary rocks using hard candy, and view a video showing igneous rock formation as magma cools.

Explanation:

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answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;