Which of the following lists gives the correct sequence of trophic levels in a food chain?
◦ autotrophs, heterotrophs, decomposers
◦ producers, primary consumers, secondary consumers, tertiary consumers
◦ consumers, producers, decomposers
◦ omnivores, carnivores, herbivores, autotrophs
◦ Both autotrophs, heterotrophs, decomposers and producers, primary consumers, secondary consumers, tertiary consumers are correct.