What are the earths four spheres briefly describe each?

The four spheres of Earth are the atmosphere (air), lithosphere (land), hydrosphere (water), and biOSphere (living organisms). The atmosphere is the layer of gases that surround Earth. The lithosphere is the solid outer layer of Earth that includes the land we live on. The hydrosphere comprises all the water on Earth in the form of oceans, rivers, lakes, and more. The biOSphere is the zone of life on Earth, where living organisms interact with each other and their environment.