The scientific name for the layer of gas that surrounds the earth.

A. lithosphere

B. hydrosphere

C. atmosphere

D. biosphere

The correct option is C. The atmosphere is defined as the envelope of gases that surround the earth. The atmosphere is made up of nitrogen, oxygen, argon and other gases. The nitrogen has the highest percentage composition of 78%. The atmosphere is divided into five layers, the layer that is most close to the earth is called troposphere.