Correct Answer : (2) Our Earth is called Blue Planet.
Earth is the Blue because of the vast encompass of oceans on its surface.
From space the oceans combined with the atmosphere makes the planet look blue.
The abundance of water on Earth’s surface is a unique feature that distinguishes the “Blue Planet” from others in the Solar System.
Earth is the third planet from the Sun and the only astronomical object known to harbour life due to abundance of water.
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