Answers

2014-03-09T20:37:20+05:30
Food chain is a sequence depicting who eats whom, starting from producrs and ending on decomposers.

food web consists of many food chains

biomagnification is the increase in concentration of a harmful substance, above the average, from one trophic level of the food chain to another
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2014-03-09T22:55:25+05:30
1) A food chain is a series which shows us who eats whom in a biological socity to obtain nutrition from it.

2) 
A food web contains all food chains in a sole bionetwork. Each alive thing in an bionetwork is portion of numerous food chains.

3) Biological magnification or Biomagnification is occurs when the attentiveness of a material, like DDT and mercury in an animal outdoes the contextual attentiveness of the material in its nourishment.
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