How is Earth unique in our Solar system?

Earth is the only planet suitable for life in the solar system. Being right in the habitable zone where the sun is jsut right and not too cold.

Earth is the only planet, which is suitable for life, it is also the only one that has liquid water on the surface :)

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explanation:

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.