Answers

2014-09-18T23:39:20+05:30
Autotrophs synthesize their own food but heterotrophs do not synthesize their own food like animals and human beings so they are dependent upon the autotrophs to get the food directly or indirectly both. 
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2014-09-19T19:18:28+05:30
Organisms interact in many different ways but all in all the stability of any ecosystem relies on these interactions organisms live off each other and the depletion or abondance of any one specific organism will always play some role in another that depends on it either for food or population control
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