Earth
Earth is known as the living planet because the conditions required to support life are found only on earth.
The answer to this question is not known.
At present, Earth is the only such planet known.
Because Earth is the only planet known to have life.
Not entirely sure what you mean with "living planet"; there is no known life on Mercury, or on any other planet on our Solar System for that matter, except on Earth of course.
For A Living Planet.
earth..The most habitable planet in the Solar System is Earth. As of June 2014, Earth is the only planet that has sustained known living things.
only earth is a living planet.
Mercury, The nearest planet to sun Venus, The hottest planet in the solar system Earth, The only known planet that have living creatures Mars, The red planet
Yes, there is "The planet is called Goldilocks" this planet has water and the write kind of air for humans to live in but there are no hmans living on it so People can go to it in a spaceship with out an spacesuit.
living things would not exist as earth is the only known planet which has life.
There is currently no known planet that is habitable for all living things. Different organisms have different environmental requirements, which makes it challenging to find a single planet that can support the diverse range of life found on Earth.