If the ecosystem is balanced which populations should be the largest which should be the smallest

So thats up to mother nature but IG the bigger the animal the less of it there should be cause

Explanation:

hear me out big animals require more alimentation and all that so they finna eat more tiny animals cause food chain and all that anywho smaller animals are gonna be their prey so more are needed to sustain all the big animals. (Case Study: wolves and rabbits)

answer; /// i believe that the correct answer is; ///a combination of the birth and death