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The sun creates energy by fusing hydrogen into helium. With a mass of 2 x 10 ^ 30 kg, the sun has a very high gravity. High internal pressure keeps the
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The Earth is: The third planet in our Solar System; A terrestrial planet; Composed of a rocky planet with a gaseous atmosphere
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Chapter 7e Earth is a living planet. 7.5 Earth as a Living Planet Our Goals for Learning What unique features on Earth are important for human life? How
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TCAP Review 6. Components of the Universe - Stars Main Sequence Stars: Main sequence stars are usually medium sized stars. Our sun is a main sequence
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Chapter 7e Earth is a living planet
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The solar system
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