Primary producers make their own food for example plants. As you go into the upper levels of the food chain the energy gets distributed to each level, but they lose some of their energy. Without primary producers alligators will not be able to obtain the energy they need for themselves to survive.
Primary producers are important to alligators' energy supply because they represent an indirect source of energy for the alligator.
Alligators do not feed on primary producers (the green plants). Young alligators feed on a variety of invertebrates, insects, amphibians, etc., while adult alligators' food includes snakes, birds, fishes, etc.
Some of the animals that serve as foods for the alligators depend on primary producers for their energy or also feed on animals that eat primary producers.
In other words, the energy supply of the alligator is indirectly dependent on the amount of energy that can be generated by primary producers via photosynthesis.
More on trophic levels in the ecosystem can be found here: https://brainly.com/question/13267087
