Producer: An autotroph organism (grass).
Consumer: Organism that eats producers (caterpillars, bison).
Primary consumer: Organisms that eat consumers (chicken, meadowlark).
Secondary consumers: Organisms that eatprimary consumers (praire felcon, eagle).
Say that an organism was removed from the web, such as a caterpillar. Though it’s not the only grass eating organism it would still mess up the web. Say you put the bison in its place, that part would work, except for the fact that the indigo bunting wouldn’t eat the bison. Which would also eliminate that from the food chain and so on.