Answers

2016-02-18T21:32:20+05:30
The solar energy acquired by producer then goes to consumer(10% of producer) & gets used up but the un used energy cannot be again used by producer (i.e. backflow of energy is not possible)
the 2nd part of answer is bio accumulation/bio magmification or bio concentration i.e. non degradable chemicals passing from one trophic level to another gets concentrated in the last trophic level...............
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