Earth is the only one we know about.
Earth
Earth supports life, because it has oxygen.
Earth
The planet that supports life, and has an ozone layer. Unless there's another world with life, instantly it's Earth.
earth
Earth is called a life sustaining planet because it has life on it, and is currently the only known planet that supports life.
At the moment, as far as we know, the only planet suitable to support a diversity of life is our Earth.
It is the only planet that supports life. (As far as we know)
it supports a great diversity of plant and animal life
co2 and o2
Water
Planet Earth.