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In any ecological system on the earth,first consumers are herbivores e.g.grasshopers,rabit,deer etc. in forest ecosystem,tadpole larva of frog in aquatic ecosystem.

Third consumers are always carnivores.e.g.snake is third consumer as it eats frog & frog is secondry consumer as it eats grasshoper,which is a first consumer(herbivore).

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15y ago

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