(B) The 'Biosphere' is the global ecological system integrating all living beings and their relationships,including their interaction with the element

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The part of the atmosphere,hydrosphere,and lithosphere where living organisms exist.

(B) The 'Biosphere' is the global ecological system integrating all living beings and their relationships,including their interaction with the elements of the lithosphere,hydrosphere,and atmosphere.It represents the zone on Earth where life exists.Therefore,the correct option is $B$.

Class 12 Biology Organisms and Populations Ecology (General)

Easy

The term 'Biosphere' refers to:

A
The part of the atmosphere where living organisms cannot survive.
B
The part of the atmosphere,hydrosphere,and lithosphere where living organisms exist.
C
Both $A$ and $B$.
D
None of the above.