Producers 4. This exercise shows you that _____% of energy from the lower level is available to the next level up. Producers units of energy = Omnivores units of energy = Carnivores units of energy = Top carnivores units of energy = 6. Does the population size increase or decrease at higher trophic levels in the pyramid of numbers for all of your ecosystems? Explain your answer. 7. What might happen to an ecological pyramid of numbers in a forest ecosystem if most of the deer were killed due to hunting by people and disease? 8. What would happen to an ecosystem if the decomposers disappeared? 9. Could there be a food chain without herbivores and carnivores? 10. Compare and contrast two of the ecosystems you studied. How is the energy conversion efficiency similar or different?
