| Food chain | Food web |
| $(a)$ $A$ food chain is a linear sequence of organisms where nutrients and energy are transferred from one organism to another. | $(a)$ $A$ food web is a complex network of interconnected food chains that shows the multiple feeding relationships in an ecosystem. |
| $(b)$ In a food chain,an organism at a higher trophic level feeds on only one specific type of organism from the lower trophic level. | $(b)$ In a food web,an organism at a higher trophic level can feed on various types of organisms from different lower trophic levels. |
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