Question

why earth is called blue planet
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Answer 1

Answer:

Earth is the only planet in our solar system that has a large amount of liquid water. About 74% of the surface of Earth is covered by liquid or frozen water. Because of this, people sometimes call it the blue planet. Because of its water, Earth is home to millions of species of plants and animals

Answer 2

Answer:

earth is called blue planet because it is the planet of water that's why it sees blue in colour from the space