none that we officially know of but a ton of em actually
a lot
The earth's oceans contain roughly 3.6 x 10^8 km^3 of water.
The earth is a planet, it has no known planets within.
Some do some don't, Earth does but not many have air or water to have life on them.
Earth has no planets of its own. It is one and has one moon.
4 planets
If you mean liquid water, then the Earth is the only planet. Mars has water ice in abundance but if melted, would probably not be anywhere near as plentiful as Earth. NASA calculates that if all the water ice was melted, Mars could be covered by water to a depth of 11m. So, as of 2010, no known planets have the same amount of water as Earth.
Earth. Cause you can look on a planet map and earth is the only one with blue on it..
the Earth is a planet so it can't have more planets!
Well Earth has many resources like oxygen there are many others too.
non , maybe mars use to when water existed on it
No planets away.