True: Producers receive their energy from the Sun., Some secondary consumers are omnivores., Decomposers return nutrients to the soil., Zooplankton can be herbivores or carnivores., Trophic level of an organism is determined by what it eats., False: Primary consumers are carnivorous., Producers are also called heterotrophs., Secondary consumers consume carnivores., Phytoplankton are primary consumers., Tertiary consumers only eat secondary consumers.,

Ecology

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