For this essay examination, answer the following questions in one to two short paragraphs each. Type your answers in a Word file and name the file with your name and the exam number. Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills. Compare and contrast the traits and growth patterns of opportunistic versus equilibrium populations. Provide one example of each. Compare and contrast indirect versus direct values of biodiversity, and provide examples. Describe two traits that represent a sustainable society and two traits of a non-sustainable society.