Earth is unique for the life it possesses in abundance.
To our knowledge, Earth is the only planet in our solar system that provides a suitable environment for life. It is the only planet in the solar system with extensive bodies of water which cover more than 70 percent of the surface. The Earth is comfortably warm because it is surrounded by a blanket of air. For us to stay on other planets, we need to depend on a life-support system and an artificial environment for survival.