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                        Ecosystem A.G.Tansley – The term "ecosystem" first of all coined by A.G. Tansley.             According to Tansley – Ecosystem is symbol of function and structure of environment.   E.P. Odum – Father of ecosystem ecology.                                                                 Ecosystem is the basic unit of ecology. Definition – All organism of an area interect with their physical environment and forming a working system called ecosystem. Note :  The boundaries of ecosystem are indistinct and have a overlapping character over each other. Ecosystem is the smallest structural and functional unit of nature or environment. It is a self regulatory and self sustaining unit. Ecosystem may be lar...