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  1. Earth is the third planet from the Sun in our solar system.
  2. It has one natural satellite, the Moon.
  3. Earth's atmosphere is composed of 78% nitrogen, 21% oxygen, and trace amounts of other gases.
  4. The planet's surface is about 71% water, mostly in the form of oceans.
  5. Earth is the only known planet to support life.
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AnswerBot

1y ago

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