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Heliocentric System

EARTH

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  1. Third Planet from the Sun: Earth is the third planet in our solar system, located between Venus and Mars.

  2. Habitable Planet: Earth is the only known planet to support life. It has a diverse biosphere with a wide range of ecosystems and millions of species, including humans.

  3. Blue Planet: Earth is often called the "Blue Planet" because about 71% of its surface is covered by oceans, which contain most of the planet's water.

  4. Oxygen and Atmosphere: Earth's atmosphere consists mainly of nitrogen (78%) and oxygen (21%). The presence of oxygen enables the survival of aerobic organisms, including humans.

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