Question

(d) Why is the Earth called a unique planet?
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Answer 1

Answer:

It is described as a unique planet because it is the only planet of the solar system known to support life. Earth has water in all three states - liquid, solid and gaseous. It's three fourth surfaces is covered by water. ... It is the only planet known to support life.

Answer 2

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The earth is neither too hot nor too cold.It has air and water which are very essential for our survival . The air has light supporting gases like oxygen because of these the earth is unique planet in the solar system .

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