A food web shows how energy moves from organisms. Producers have 100% of the energy. From there, 10% is transferred to each of the next trophic level.
This is not a food chain because in a food chain, energy simply travels from one organism to the next. A food web is where you have many overlapping food chains. A prey predator interaction is simply the relationship two organisms have. It doesn’t focus on the path of energy through a community. It’s simply like saying “lions hunt gazelles”. This is not mutualism. Mutualism is an example of a symbiotic relationship where both organisms benefit. An example of this is an oxpecker and a rhinos. Rhinos are rid of pests and oxpeckers get food. Both organisms benefit. Other symbiotic relationships include commensalism (one organism benefits, other unaffected) and parasitism (one organism benefit, other is harmed).
