Why are there more herbovires than carnivores in an ecosystem?

There are more herbivores than carnivores in an ecosystem primarily due to the energy pyramid's structure. Energy decreases significantly as it moves up trophic levels; only about 10% of the energy from one level is passed to the next. Since herbivores (primary consumers) occupy the second trophic level and rely on abundant plant life (producers) for energy, they can support larger populations. In contrast, carnivores (secondary and tertiary consumers) have less available energy and food resources, leading to smaller populations.