Question

why is earth called a uniqe planet?
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Answer 1

Answer:

Earth is called a unique planet as it is in the habitable zone in solar system as well as the satellite (moon) which is crucial part of our survival is equal to the size of a planet. Such favourable conditions give rise to seasons and leading to development of life

Thus watch is called a unique planet

Answer 2

Earth is called a unique planet as life exists on it. However because of this it is different from other planets. Air, Water and Land is only available on earth which are the basic needs for human brings.