Hi. Great question. A food web is more realistic as an ecosystem's stability is a product of it's biodiversity. The more biodiverse an ecosystem is the more stable it is. I'm this sense highly stable ecosystems are highly interdependent i.e. More species will rely on each other for food. The more feeding relationship there are the more realistic it is to represent the ecosystem as a diverse, inter... more

It's more practical because of the reality you can include more living beings in with the general mish-mash, and show how they associate with one another in a biological system. Instead of simply completing a little section of around 3 or 4 creatures in a fundamental evolved way of life, you can have the same number of various creatures as you need from a biological system in a nourishment web,... more