Why must every ecosystem include producers as well as other organisms

An ecosystem must contain producers, consumers, decomposers, and dead and inorganic matter. All ecosystems require energy from an external source – this is usually the sun. ... Consumers eat producers – they are unable to make their own food and so must eat other plants and animals. (All animals are consumers.)

Explanation:

google helps

50.23 i believe is correct but don't quote me on that.