Two of these food chains have the same producer and top predator. They can be joined together into a food web. JavaScript is required to view this activity.

Narrator: With more than 42,000 restaurants in over 100 countries, Subway has the most locations of any fast-food chain on the planet. And at first, that sounds like a sign of a thriving sub giant.

National chain food retailers also reduced their store footprint all five boroughs registering a net decline in chains. The study reported the net decline in the overall number of chain stores ...