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The trophic level of an organism is the position it occupies in a food chain. The word trophic derives from the Greek referring to food or feeding.

A food chain represents a succession of organisms that eat another organism and are, in turn, eaten themselves. The number of steps an organism is from the start of the chain is a measure of its trophic level. Food chains start at

trophic level 1 with primary producers such as plants,

move to herbivores at level 2

predators at level 3

and typically finish with carnivores or apex predators at level 4 or 5.

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