Answer:
Producers: They make their own food by the process known as photosynthesis which uses sunlight, chlorophyll, carbon dioxide, water, et cetera.
Primary consumers: They are the group of organism that feed on the producers for their energy requirement. Example: Herbivores animals.
Carnivores: The animals that feed on meat only. Example: wolf and lion.
Omnivores: The animal;s that feed on both plants and animals is known as omnivores: Example: Fly and ants.
Decomposers: They break down the dead and decaying organic matter for recycling the nutrients into the soil. Example: Fungi