The surface of the earth consists of the hydrosphere and the lithosphere.
Only one terrestrial planet is known to have an active hydrosphere, Earth.
The hydrosphere is an essential component to the earth's surface.
The hydrosphere is complex and fluid.
I learned about the hydrosphere in seventh grade, when I studied the earth.
Always changing, the hydrosphere never looks exactly the same from day to day.
The biggest and most recognizable components of the hydrosphere are the oceans and seas.
The hydrosphere is one of the four spheres of the earth.
Clouds are often included as a part of the hydrosphere, becuase they are composed mostly of water droplets.
Ice and snow are often forgotten, but very substantial, parts of of the hydrosphere.
I have always been fascinated with every aspect of the hydrosphere.
Lakes and rivers are important sources of freshwater in the earth's hydrosphere.
The Martian hydrosphere is radically different from our hydrosphere here on Earth.
The hydrosphere includes all water on the surface of the earth.