Define the following:
- It is nearest to the Sun.
- Its surface has thousands of craters.
- It has no atmosphere.
- It experiences extreme temperatures.
- It is known as the ‘Earth’s Twin’ because it is of the same size as the Earth.
- It is the brightest object in the sky after the Sun and the Moon.
- It is bright because cloud cover reflects the light of the Sun from its surface.
- It is also known as the morning or evening star because it is seen in the sky before sunrise and after sunset.
- Earth is the fifth-largest planet and third nearest to the Sun.
- Its shape is geoid—spherical at the equator and flattened at the poles.
- Earth is the only planet in the Solar System which can sustain life.
- Mars is a red planet because of its reddish appearance.
- It has volcanoes, mountains, dried-up river beds, canyons, deserts and polar ice caps which are similar to those on the Earth.
- It is the largest planet in the Solar System.
- It appears yellow.
- It has a great red spot on its surface; the spot is three times the size of the Earth.
- It has rings around it.
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