Leaving referent words out of questions can breed all sorts of misunderstanding,
which in turn leads to suspicion and, eventually, to war.
earth is the first planet humans have visited and the only one
Earth
No. Venus does not have a moon either.
Nature - 1982 Attenborough's Life Stories Our Fragile Planet 31-7 is rated/received certificates of: USA:TV-G
Only in our imagination.
Earth- We are the only planet that can support life.
Earth is the only planet known to have life and liquid water.
Our planet, the Earth is the only planet with drinkable water. It is the only planet in our Solar System with life and oxygen. Without the oxygen, there will be no life and water on Earth.
Earth
Because it is the only planet that has air
The only known planet to support life as we know it is the one you and I are on, Earth.
Earth is the only planet with known life... so far.
The ONLY planet known to have life, so far, is Earth.
Planet earth is the only planet that we know of that has life on it.
Earth (obviously).
Earth is the only planet in the solar system where life is known to exist. It has a unique combination of conditions, such as liquid water, a stable atmosphere, and a suitable temperature range, that support the diverse forms of life found on our planet.
Earth is called a life sustaining planet because it has life on it, and is currently the only known planet that supports life.