It Took So Long for True Crust to Form on Earth

question 48

Multiple Choice

It took so long for true crust to form on Earth because

• A)Earth had to complete the differentiation process before rocks could form.
• B)temperatures were so high that any crust that did form was quickly remelted.
• C)there was no atmosphere on the planet and thus no air to cool the crust.
• D)heat from the creation of the magnetic field kept the surface molten.

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