Which of the following statement is correct? U.P.P.C.S. (

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Which of the following statement is correct?

U.P.P.C.S. (Pre) (Re. Exam) 2015

[Ecology and Biodiversity]

A

The energy flow in the biospheric ecosystem is unidirectional.

B

The energy flows in the biospheric is cyclical.

C

Relative loss of energy in natural ecosystem decrease with increasing trophic levels.

D

Species at progressively higher trophic levels appear to be less effi cient in using available energy

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