Question.
What is a biosphere?
( Chapter - 1 Environment, Class 7 NCERT, Our Environment( Geography) )
Answer.
The biosphere is one of the four major domains of the environment, the other three domains of the environment are the lithosphere, hydrosphere, and atmosphere.
The following way biosphere can be defined-
The biosphere is a narrow zone of the earth where land, water, and air interact with each other and support life.
The biosphere is comprised of plant, animal kingdoms, and surrounding non-living supporting components [ water, land, air ] of the environment.
Biosphere comprises all parts of the earth where life exists.
The biosphere is basically the summation of all types of ecosystems that are found on the earth namely pond ecosystems, rivers ecosystems, forests ecosystems, grassland ecosystems, desert ecosystems, ocean ecosystems, etc.
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