What is the composition of the earths crust?

In: Geology [Edit categories]

Answer:

I only sell aluminum. Others seem awfully idiotic.

That's a stupid little mnemonic I made up to remind myself of the composition of the Earth. Overall composition: Iron, Oxygen, Silicon, Aluminum, in that order. Crust composition: Oxygen, Silicon, Aluminum, Iron, in that order.

Earth's crust is mostly made up of Silicon and Oxygen

Related answers:

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Can you answer these?