Educational worksheet illustrating energy pyramids and food chains, guiding students to place organisms into the correct trophic levels within an ecosystem.

A worksheet titled "The Biosphere" that includes an energy pyramid diagram and instructions for placing organisms from food chains into the correct trophic levels. The worksheet has three sections: one with a food chain (Acorn → Squirrel → Crow → Coyote), another with (Phytoplankton → Shrimp → Snapper → Shark), and a third where students create their own food chain (Plants → Rabbit → Snake → Eagle). The pyramid shows the 4th trophic level as tertiary consumers.