Plates<span> at our planet's </span>surface<span> move because of the intense heat in the </span>Earth's<span> core that </span>causes<span> molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down.</span>
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Answer:
The universe is mainly hydrogen.
Explanation:
The universe is mainly hydrogen.