A layer of charged particles, called the ionosphere, surrounds Earth, extending from about 50 to 400 miles above the surface of the planet. Disclaimer: AAAS and EurekAlert! are not responsible for ...
Planet Earth is not a solid ball of rock, it's made up of different layers. The crust of the earth ... is made from solid iron and nickel. In this diagram, the red lines represent the edges ...
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