Because that is the first place they found it. It is not the only or the first place to actually have water, but Earth is where we found it first.
In the Solar System scientist found a new planet right now they have nicknamed it to Super Earth. They found water, plants, and another sun. They have a filling that there is life on that planet.
earth's fresh water can be found in rainfall
Yes. Water can be found on earth and moon!
Most of Earth's water is found in the liquid phase.
They found water there.
Most of Earth's fresh water is found in glaciers and ice caps.
Most of earth's water is in the oceans
Thales of Miletus
Comets.
Between cells.
On Earth, water can be found as vapor, liquid, and ice.
Noah