Summary
- What is a Food Chain
- Autotrophs and Producers
- Heterotrophs and Consumers
- Decomposers
- Trophic Levels
- Construction of a Food Web and Food Chain
What is a Food Chain?
The Food chain represent the flow of energy and nutrients from one organism to another through the ecosystems. The food chain is a representation of who eats whom relationship. The food chain show a linear pathway. In reality, we cannot always show this in one linear pathways, because some organisms have several food sources.
grass –> cow –> human.
However, the boy also has vegetables in his hamburger. Another linear pathway is:
lettuce –> human; or tomato –> human
A food web consists of many intersecting food chains and represents the different things an organism can eat and be eaten by.
