Which of the following terms refers to the sum of all ecosystems of the earth?
Correct Answer : b ) BiosphereExplanation :
The term Biosphere refers to the sum of all ecosystems of the earth. It is also described as the zone of life on earth. The term environment refers to conditions surrounding the organisms, including plants and human. The term Biome refers to distinct biological communities formed as a result of their common environment. The term Biosystem was used by Theinemann to refer to the concept of the ecosystem before the use of the term ecosystem by E.P. Odum for the same concept.
Hence, option (b) is correct.
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