Food chains and food webs
Specific feeding sequences (and therefore flow of energy) can be represented as a food chain.
Arrows between each organism show the direction of:
- Feeding (consumption).
- Energy flow.
- The transfer of substances such as carbon and nitrogen.
Food webs show a number of food chains that are interlinked due to the organisms involved living in close proximity.
Most organisms will have more than one food source that can be seen in a food web but not a food chain.