1. Grass \(\rightarrow\) Rabbit:
Grass is a primary producer (plants), and rabbits are herbivores that feed on grass. This is the beginning of the food chain where energy is transferred from the grass (producer) to the rabbit (primary consumer).
2. Rabbit \(\rightarrow\) Fox:
Foxes are carnivores that prey on rabbits. Hence, the next link in the food chain is the fox, which consumes the rabbit (secondary consumer).
3. Fox \(\rightarrow\) Wolf:
Wolves are apex predators that may prey on foxes, completing the food chain. The wolf, as the top predator, consumes foxes.