Since predator/prey relationships are essentially exchanges of energy, a food chain is a type of energy flow.
(predator/prey relationships; are essentially; exchanges of energy, a food chain is a type of energy flow) (a food chain; is; a type of energy flow) (a food chain; is a type of; energy flow)
predator/prey relationships a food chain a food chain
are essentially is is a type of
exchanges of energy, a food chain is a type of energy flow
a type of energy flow
energy flow