The sun. The sun gives energy to the plants, and then the herbivores, then carnivores eat the herbivores or omnivore's eat herbivores
producers (e.g. grass), because it makes its own food by photosynthesizing then other organisms eat it.
They eat the primary and become the source of food for carnivores and omnivores animals
actually they depend on our main source of energy the sun indirectly the sun lets plants photosynthesize then the herbivores will eat the plants so they can survive and so the carnivores will eat the herbivores this is called the food chain
a herbivore is an animal that only eats green plants. for example snails are herbivores because they eat lettuce.
Grapes are fruits that feed herbivores and humans. Carnivores eat them.
Herbivores form the primary consumers in a food chain.
Producers ,or photosynthesizers as you call them ,are the foundation for food webs and food chains ,because herbivores eat plants (producers) and carnivores eat herbivores and sometimes other carnivores. Withoutthe plants ,the herbivores would have no food. Without the herbivores ,the carnivores would have no food ,and the chain or web would be damaged. This is my theory ,did it help you?
Yes, at the bottom. They eat plants (at the very bottom) and are eaten by carnivores.
Herbivores are at the bottom of the food chain, if they did not exist carnivores would have nothing to eat and they would cease to exist, as would everyone else above them on the food chain
coyotes are predators that eat herbivores who in turn get sustenance from plants. this is a simple food chain
Other than fungi, plants don't eat other plants so you need animals in the food chain. This includes herbivores to eat the plants. Carnivores to eat the herbivores. Omnivores eat both plants and animals.