The answer is that it shows a network of food chains. Models that have to do with food chains are used to show what certain ecosystems would be like in real life. While using these models, specialists can test different types of real food chains. Certain specialized scientists use the food web models to be able to see the networks of undead organisms that are included in a food chain. Hope I helped!
Answer:
he served senate for 6 years (2001 to 2007)
