What is the difference between the food habits of organisms belonging to the first and the third trophic levels ? Give one example each of the organisms belonging to these two trophic levels.

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The organisms belonging to the first trophic level are producers which make their own food with the help of sun’s energy. 

For example – Green plants. 

The organisms of third trophic level are carnivores that feed upon herbivores. 

For example – Lion and Tiger.

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