Question

matter & energy test (m25)
food chains and food webs are both diagrams that show energy flow in an ecosystem.
food chains are diagrams, while food webs are diagrams.
complex
simple

Explanation:

A food chain is a linear sequence of organisms where each is eaten by the next. It's simple. A food web is a complex network of multiple food chains in an ecosystem, showing more diverse feeding relationships.

Answer:

Food chains are simple diagrams, while food webs are complex diagrams.