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Earth's crust consists of solid rock that consists of both dry land and the ocean floor and forms Earth's outer skin. If you really want to get technical, it consists of oxygen, silicon, aluminum, calcium, iron, sodium, potassium, and magnesium.

Some additional facts are:

Surface Temperature = to 8700 Fahrenheit

Thickness = 5 - 70 kilometers

Density = 2.6 - 2.9 g/cm3

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Q: What does earth's crust consist of?
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