Trophic levels facts for kids

Trophic levels categorize organisms into different levels of the food chain. The first trophic level are producers.

Images for kids

First trophic level. The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun.
The mean trophic level of the world fisheries catch has steadily declined because many high trophic level fish, such as this tuna, have been overfished