It comes from the Greek word "sphaira" which means "ball" or "sphere".
Here are some examples of words with the suffix "-sphere":
* Atmosphere: The layer of gas surrounding the Earth.
* Biosphere: The part of the Earth where life exists.
* Geosphere: The solid, rocky part of the Earth.
* Hydrosphere: The part of the Earth that includes all the water.
* Stratosphere: A layer of the Earth's atmosphere.