What defining characteristic makes Earth unique among known planets?
Answer
Presence of liquid water covering a substantial portion of its surface
The abundance of liquid water covering a significant part of the surface is cited as the defining characteristic that makes Earth unique among known planets.
Related Questions
Which position does Earth hold in terms of size among the Solar System's planets?How long does it take for Earth to complete one orbit around the Sun?What primary composition defines Earth as a terrestrial planet?What defining characteristic makes Earth unique among known planets?In its material sense, what is *earth* (lowercase) typically contrasted with?What is Earth's official designation regarding its position from the Sun?When a construction worker moves *earth*, what scale of material are they concerned with?From what linguistic source does the English name for Earth originate?Which three spheres comprise the interconnected system described by the ecological definition of Earth?According to linguistic convention, what does **Earth** (capitalized) generally refer to?