Question

no.4 What is earth's crust made up of?
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Answer 1

Answer:

• Above the core is Earth's mantle, which is made up of rock containing silicon, iron, magnesium, aluminum, oxygen and other minerals.
• The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium.

Explanation:

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Answer 2

Answer:

I think it may help you

Explanation:

it is made up of rocks