Drag organisms from the bank into the chain slots. Build a complete food chain and watch energy flow from producers to apex predators!
Producers (plants) make their own energy from sunlight via photosynthesis. They are eaten by primary consumers (herbivores), which are eaten by secondary consumers, and so on. At each step, about 90% of energy is lost as heat — which is why there are fewer predators than prey!
A food chain shows one path of energy. A food web shows all the interconnected paths in an ecosystem — most organisms eat multiple things and are eaten by multiple predators.