![This Tuna sandwich diagram illustrates food web/trophic pyramid.](http://static.sciencelearn.org.nz/images/images/000/000/145/full/Tuna-sandwich20150812-31707-1bx99s6.jpg?1674163768)
On average, only 10% of the energy from an organism is transferred to its consumer. This means that a top-level consumer, such as a tuna, is supported by millions of primary producers from the base of the food web or trophic pyramid.
On average, only 10% of the energy from an organism is transferred to its consumer. This means that a top-level consumer, such as a tuna, is supported by millions of primary producers from the base of the food web or trophic pyramid.