The answer to this is the remains and waste products of plants, animals and other living things organisms.
Answer: In the middle intertidal, barnacles, mussels and seaweeds all compete for space – a precious limited resource. Mussels are generally the dominant competitor on rocky shores and without the presence of predatory seastars would outcompete other taxa and occupy all available space.
Explanation:
A successful food web needs to have all of the organisms mostly bigger than the ones that they are eating otherwise the food web wouldnt neccessarily work properly and then the food webs would all be messed up.
