Earth is currently the only planet where it is known that beings can exist. However in my opinion the universe is so unthinkably huge that there must be another planet where there are the right conditions for life.
Earth is the ONLY planet suitable for humans.
earth is the first planet humans have visited and the only one
No, the Earth is the only planet with Humans.
Only the Planet Earth have humans walked on.
It is the only planet with the recourses necessary for us to survive.
No. Mercury essentially has no atmosphere. Earth is the only planet with an atmosphere that humans can breathe.
Plenty of people have walked on the planet Earth but as yet the only place outside of Earth that humans have walked in is the Moon.
Since flax (and the humans who harvest it) grows only on planet Earth, that would be the only planet with significant quantities of linseed oil.
Earth, is famous for being the only planet known by us humans that can support life.
The planet is worse off with humans.
Humans are already on planet Earth... we don't need to 'travel' to Earth. Humans already fare quite well on planet earth.
Yes, apart from earth. (Technically the moon is not an actual planet, so technically the only planet humans have been on is Earth). There is talk of sending a manned mission to mars, though it seems unlikely.