A food chain is a map or a chart that shows what eats what. For example look at the food chain below. It shows that the drill is at the bottom of the food chain. Which means its in a lot of danger of the other animals the fish eats the krill, the dolphin eats the fish, the shark eats the dolphin.
Another food chain is fox eats the cow, the cow eats grass, grass eats sunshine. (On a computer test I said people need sunshine like plants and I was wrong more like the computer.) Without food chains animals would be hungry Thats how food chains work.
