Question

the smallest functional unit of biosphere is​

Answer 1

Answer:

The smallest unit of the bio system is where there is living i.e ecosystem. The Earth is the smallest unit of the bio system where we all live. This ecosystem includes our environment which is physical in nature. The ecosystem comprises both living and non-living organisms which together form the biosphere.

Explanation:

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Answer 2

Answer:

Ecosystem

Explanation:

Ecosystem is the smallest unit of biosphere. The earth is surrounded by 4 different layers namely Lithosphere, Biosphere, Hydrosphere, and Atmosphere. As "biosphere" is comprised of a group of ecosystem linked together, ecosystem is considered as the "smallest unit" of the biosphere.