Which type of organism generates oxygen and makes up the lowest trophic level in an energy pyramid? a. producers b. omnivores c. herbivores d. consumers

Your answer will be A producer because producers are plants they give off food and a lot of animals eat their their at the bottom of the pyramid because that have nothing in defense also an ts not D because those are like lions, and bears stuff that eat things (like predators) also its not B because omnivores eat both plants and animals like bears and when it came down to rather A, or C I choose A because herbivores are animals that eat plants like a sloth.

Your answer is A.