Final answer:
A food web is a diagram that shows feeding interactions between many organisms in an ecosystem through multiple intersecting pathways. It is a more accurate and descriptive model for ecosystems compared to a food chain. A food web accounts for the complex interconnected relationships between different species and their interactions with each other and the environment.
Step-by-step explanation:
A food web is a diagram that shows feeding interactions between many organisms in an ecosystem through multiple intersecting pathways. It is a more accurate and descriptive model for ecosystems compared to a food chain, which represents a single pathway of feeding interactions. In a food web, organisms can feed at multiple trophic levels and can be eaten by species from multiple trophic levels. It accounts for the complex interconnected relationships between different species and their interactions with each other and the environment.