4.5a Food Chains

4.5 Understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer.

• The food chain links together the producer to the primary consumer then to the secondary consumer and possibly to the tertiary consumer.
• 1 organism per trophic level.
• In a food chain unable to show an organism to be an omnivore or to be feeding at more than 2 trophic levels.
• Food chains build a flow of matter and they show the flow of energy.