We can only live on earth because we have many things that other planets don't. For example were not so close to the sun like Mercury that it is so hot but were not far away from the sun like Neptune so it's not freezing. Also because there are other reasons. Like because we have air, gravity, astropheres and other things. Hopefully that can answer your question.
Earth
.How do you know that earth isn't the other planet?
As of now, no humans have been confirmed to be living on any new planet outside of Earth. The search for habitable planets and potential colonization is an ongoing area of research and exploration in the field of astronomy and space exploration.
Because it is simply.. The only planet to live on.
Earth - The planet we live on.
Earth!
Planet Earth
on the planet earth
earth
Earth
It doesn't have air for people to live on that planet
On the planet Earth
the planet we live on is earth
Earth is the planet we live on. Earth has one moon.
When people say Earth they are referring to the planet on which we all live.
Planet Earth Live was created in 2010.
If they do we have not found them.