Food pyramids
The main difference between food chains and food webs is the fact that food webs portray the various producers and consumers within an ecosystem. Consequently, through the use of food webs we are able to observe the various predators of an organism rather than a single predator.Food pyramids are quite different to the portrayal of food chains and webs because it not only lists the autotrophic and heterotrophic organisms, it also depicts the division of biomass within the ecosystem.