energy flow

• What is biomass?

  The mass of living matter in an organism/population.
• What are producers?

  Photosynthetic organisms that produce biomass by synthesising molecules.
• What are consumers?

  Organisms that obtain molecules by feeding on other organisms.
• What are predators?


  Consumers that kill and eat other animals.
• What are prey?


  Consumers are killed and eaten by other consumers.
• What is a trophic level?

  A group of organisms in an ecosystem that are in the same position along a food chain.
• What is a food chain?

  A model that represents a set of feeding relationships within a community.
• Efficiency of biomass transfers = $\frac{biomass\ at\ higher\ TL}{biomass\ at\ lower\ TL}$X 100