Answer:
The gaseous part of the earth is known as the ATMOSPHERE. Atmosphere from from Greek atmos ‘vapour’ + sphaira ‘ball, globe’.
The oceans, the lakes, and the rivers of the earth are called the HYDROSPHERE.
From the Greek root hydro-, "water," and Greek sphaira, "globe or ball".
The solid part of the earth called the LITHOSPHERE.
Litho" is from the Greek word lithos, meaning stone. "Sphere" is from the Greek word sphaira, meaning globe or ball.
