English Language and Literature homework help. This archive file of ENV 322 Week 1 Discussion Questions 2 Energy and Food Supplies contains: The underlying theme of this course is energy. As a whole, the global society needs to find ways to reduce our energy consumption. The food pyramid is a prime example of energy transfer within individual ecosystems and the biosphere. As you increase the trophic levels, a greater amount of energy is lost. Some environmentalists argue that humans should eat a vegetarian diet in order to conserve energy. What are some of the pros and cons of this action? Consider the impact to the agricultural industry? How low on the food chain do you eat? Would you consider eating lower?