Slow cooling of hot magma leads to the formation of crystals

Slow cooling leads to the formation of large crystals. If the crystals remain undisturbed while cooling, they grow according to a regular pattern. Magma closer to the surface cools much faster than magma that hardens deep below ground. With rapid cooling, there is no time for magma to form large crystals.

Explanation:

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Explanation:

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.