Multiple choice

Of what is Earth's crust made?

  1. rock

  2. oxygen

  3. magma

  4. water
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A Correct answer
Explanation

Earth's crust is the outermost solid shell of our planet and is composed of various types of solid rock, such as igneous, sedimentary, and metamorphic rocks. Magma is molten rock found beneath the crust, and water covers much of the crust but does not make up the crust itself.

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