Food chains and Biomass.
Biomass is the mass of living things. At each stage of a food chain it decreases because of waste etc. The biomass can be drawn to scale and shown as a pyramid of biomass.
Reducing energy losses in food chains:
- shorter food chain.
- place animals in a warm environment.
- reduce movement, less space to move around in.
Grass --------> Rabbit --------> Stoat --------> Fox
Biomass and energy are lost at every stage of a food chain due to...
- energy and materials being lost in an organism's faeces (waste).
- energy released through respiration being lost in heat energy and movement.