Humans can live on it
The most common unique about earth to other planets is that Earth have life.
The planet Earth is the only planet which we know to contain life. There may be others, but we have not found them yet. So for now, Earth is unique.
I live on it! :)
mars
It contains a biosphere.
It contains a biosphere.
idsk
Earth is the only planet currently known to have life.
There are estimated to be around 8.7 million unique species currently alive on Earth today.
It is not unique in any specific physical characteristic; the only thing unique about Earth is that - as far as we know - it's the only planet to harbor life.
What is unique is that it has beings who ask questions starting, 'what is unique about . . . ?'
Earth is often referred to as the unique planet because it is the only known planet in the universe to have liquid water on its surface, which is essential for life as we know it. Additionally, Earth has a diverse range of ecosystems and abundant biodiversity, making it a truly exceptional and habitable place in the solar system.