The highest trophic level in an ecosystem is obtained by

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Omnivores. Each step or level of the food chain forms a trophic level. The autotrophs or the producers (green plants) are at the first trophic level. They fix up the solar energy and make it available for heterotrophs or the consumers. The herbivores or the primary consumers come at the second, small carnivores or the secondary consumers at the third and large carnivores or omnivorous or the tertiary consumers form the fourth trophic level. Source- NCERT

The highest trophic level in an ecosystem is obtained by

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