Levels in a food web/chain or on a pyramid of number/biomass are called trophic levels (trophic comes from the Greek for feeding).
All food webs start with a producer. Producers will be photosynthetic or chemosynthetic organisms that create the chemical fuel that will be passed along (in one form or another) the food chain.
When considering how much energy will be passed up to the next trophic level it is useful to keep the fuel analogy alluded to above:
If we stick with a photosynthetic pathway the transfers can be summarised as:
the energy transferred between a producer and a consumer is 10%
ex.
10% owl-100J
10% robin-1000J
10% caterpillars-10 000J
10% grass-100 000J
trophic levels
only 10% of that energy is passed onto the next consumer:)
Roughly 10%.
no.. thats false.. its actually the opposite
The producer supplies good and services and the consumer demands them.
Animals: Grass (producer) and a Cow (consumer) Economy: Factory (producer) and Buyer (consumer)
Consumer surplus - the difference between what a consumer is willing to pay and what they actually pay. Aggregate consumer surplus measures consumer welfare. Producer surplus - the difference between what a producer is willing to sell their product for and what they actually receive. Aggregate producer surplus measures producer welfare
The difference between a producer and a consumer is that a producer makes his own food and consumer purchases his own food.
A producer makes products while the consumer uses or really consumes them
Consumer. Trees are a producer, detritovores are a decomposer (worms) and everything between are consumers.
Consumer. Trees are a producer, detritovores are a decomposer (worms) and everything between are consumers.
The Struggle Between Producer and Consumer - 1912 was released on: USA: 4 December 1912
preaditores are fidel and consumer are spre
market
Market