3 Study this diagram of an ecosystem and answer the questions that follow. Figure 5.10 a What is an ecosystem? b Which number refers to a herbivore? c Which number refers to a: predator il primary consumer, and carnivore? d Does number 2 refer to a herbivore, primary consumer or producer? Suggest a reason for your answer. e Which number refers to an: organism that can influence the ecosystem more than any other organism, and an omnivore? What is an omnivore? f Briefly describe the changes that may result in the ecosystem if organism 4 is removed from the area.

For each of the species appearing in the food web, identify its domain, its kingdom and its role in the food web (producer, consumer 1st order, 2nd order, 3rd order, decomposer). You can do this under tabular form if desired. If certain trophic levels are missing from the diagram, identify them and specify their role. 2. Which population of food web organisms is associated with the highest level of available energy? Briefly explain your reasoning 3. Using a concrete example, make a link between this food web and the biogeochemical cycle of nitrogen 4. Briefly explain how the harbor seal (Phoca vitulina) contributes to the stability of this food web. Your answer must include at least three (3) different types of interactions, intra or interspecific. 5. What keeps the population size of gulls stable if this species has no predators

Using your answer to #4 how would this change in the quantity of Rock Bass Fish impact the entire ecosystem? just need answer to 5 but have to use 4 to answer

Is this answer correct about the ecological footprint?