Energy transfer along a food chain
Producers-plant which make their food
herbivore-animal that eats plants only
carnivore-animal that eats meat only
primary consumer-feeds on producer
secondary consumer-feeds on primary consumer
where does energy on earth come from? The sun
How do living things use energy?
- waste product
- to keep warm
- adds to body mass
only 10% of biomass is added after being eaten
Pyramid of biomass
A pyramid of biomass shows the mass of living things at each stage of the food chain. biomass is the mass of living material in a plant or an animal.
The amount of biomass at each stage of the food chain is less than it was at before because:
- not all organisms at one stage are eaten by the stage above;
- some material taken in is passed out as waste e.g. CO2, urine and faeces
- some of the biomass is used in respiration to release energy for movement, growth, keeping warm. some energy is lost to its surroundings.