For example, the size of the insect population affects the size of the frog population, which affects the size of one of their predators, the trout, which in turn affects their predators, the pike.
(the size of the insect population; affects; the size of the frog population, which affects the size of one of their predators, the trout,) (the size of the frog population; affects; the size of one of their predators) (the trout; affects; their predators)
the size of the insect population the size of the frog population the trout
affects affects affects
the size of the frog population, which affects the size of one of their predators, the trout,
the size of one of their predators
their predators