Emma his all sad and lonely because her friends is no long present. The reason she is lonely is because she can no longer share the trophic level with Austin. The trophic level is each step or web of a food chain.
After losing her friends Emma got mad and ate every animal she saw. She is now at the top of the food chain. The food chain is to show how energy flows in an ecosystem.
Because Phil and Emma are tertiary consumers on the food web, they have no predators.A food web is a collection of multiple food chains. All of the characters are shown in a biomass diagram. Biomass is the total mass of living matter at each trophic level.