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  3. Why do food chains contain only 3 to 4 steps?

. Why do food chains contain only 3 to 4 steps?

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In a food chain energy is transferred from producers to primary consumers but in this process some amount of energy is lost in the environment, some in doing work, etc and so the energy content decreases as we go from one trophic level to another. Since very little energy is available for next level consumers food chains consists of 3 to 4 levels only.

 

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