Answer:
2.Food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem.
Step-by-step explanation:
A food chain shows only a targeted path, while a food web shows a more realistic path. See attached photos.
First picture: Food Chain: Notice how it only shows one path from producer to tertiary consumer.
Second picture: Food Web: Notice the many pathing that connects for certain organisms in the food web. It shows a more realistic distribution of energy in a real world scenario.