In ecosystems, food chains rarely contain more than four or five trophic levels. Which of the following best explains this limitation?
Herbivores are much more efficient at digesting food than carnivores.
Approximately 90%90\%90% of energy is lost at each trophic level transition, leaving insufficient energy to support higher levels.
The physical size of organisms always decreases at higher trophic levels.
The total number of organisms increases at each successive trophic level.