Question

how is earth a unique planet

Answer 1

earth is a unique planet because it has a normal things like: -there is only one moon, there is oxygen for living, there is a normal atmosphere for living etc. so earth is a unique planet

Answer 2

Answer:

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how is earth a unique planet

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The earth is called a unique planet because:-

It is the only planet which has favorable conditions that support life.

It is neither too hot nor too cold.