Question

difference between atmosphere and biosphere

Answer 1

The atmosphere is a blanket of air surrounding the earth composed of Nitrogen , Oxygen , Carbon Dioxide and inert gases.It is one of the four realms of the earth.
It is composed of 5 layers:Troposphere , Stratosphere , Mesosphere , Thermosphere and Exosphere .
Biosphere is a zone on earth in which living beings exist.It has many ecosystems.
All the ecosystems of the earth together make up the biosphere.
It serves as the highest level of organization.It consists of the life giving areas of Lithosphere , Hydrosphere and Atmosphere.

Answer 2

Biosphere is an enclosed environment with it's own capacity to generate and sustain living conditions through the synthesis process creating atmosphere. 
Atmosphere is the blanket of air encasing the planet earth created by the combination of separate elements and the sun's rays into a complex whole humans and all living mammals/fowl breathe and fly in.