Answers

2015-07-07T21:46:08+05:30
Heterotroph depend on autotroph for nutrition. The auto. make their food from sunlight and Co2 and thus get nutrition then hetero. consume it and get 10% nutrients from it. And then secondary consumer ate it and then this make a chain..
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2015-07-07T22:16:05+05:30
Because all heterotrophs feed on meat or palnt products  which come from autotrophs directly or indirectly....................
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