4. how are food webs different to food chains? explain why food webs are more useful.

Brief Explanations:

Food chains show a single - linear feeding relationship between organisms. Food webs are a complex network of multiple food chains, showing the interconnected feeding relationships in an ecosystem. Food webs are more useful as they represent the complexity of real - world ecosystems, showing alternative food sources and multiple trophic interactions. This helps in understanding the stability and dynamics of an ecosystem better.

Answer:

Food chains are linear, while food webs are a network of multiple food chains. Food webs are more useful because they represent the complexity of ecosystems, showing alternative food sources and multiple trophic interactions, which helps in understanding ecosystem stability and dynamics.