TEST ECOSYSTEMSVersion en ligne Answer the questions par María Arévalo Membrive 1 What is the source of energy in food chains? Written answer 2 How are green plants known in a food chain? Written answer 3 What consume the green plants? Written answer 4 Which consumers eat the secondary consumers? Written answer 5 What are trophic relationships? Written answer 6 What does a food chain show? Written answer 7 What is a food web? Written answer