Trophic level is the position an organism occupies in the food web.
Producers >>>> Primary consumers >>>> Secondary consumers >>>> Tertiary consumers
Examples of Producers are plants and cyanobacteria. They are organisms that can produce their own food.
Examples of Primary consumers are herbivores (eat plants only) and omnivores (eat both plants and meat).
Secondary and Tertiary consumers are omnivores and carnivores.