Because the earth is covered with 75% water and the only known planet with water.
as it consists of 75% of water
as it consists of 75% of water
We are called Earth. "Blue Planet" is a nickname for Earth, since our planet comprises primarily of water.
The "atmosphere".
This planet is called earth... to see the earth from out of space view earth.google.com
Planet Earth.
Earth is the third planet from the Sun. The planet that we live on is called Earth.
earth
My planet, and yours, is called Earth.
Jupiter is called the giant planet
Earth.
mercury