Food chains help us understand the connection between living things. What eats what? Where does the energy that life needs to survive come from? Learn about producers, primary consumers, secondary or tertiary consumers, apex predators, and decomposers and the roles they play in food chains! Like this video if you want to see more videos about ECOLOGY! Subscribe to FreeSchool: https://www.youtube.com/user/watchfreeschool?sub_confirmation=1 Visit us on Facebook: https://www.facebook.com/watchF