Question

why is earth called a unique planet​

Answer 1

Earth is the only known planet of the solar system which supports life. Earth has oxygen, water and temperature. ... All these conditions which are supporting life, like presence of water and air in a good proportion, presence of life supporting gas and balanced temperature make earth a unique planet.

Answer 2

Earth is called a unique planet because it is the only planet which supports life. It has plants which give oxygen helping us to survive. It has an atmosphere which protects us from the UV rays of the sun. It also has a water cycle which supports human life.