Published on November 20, 2015
For more course tutorials visit www.uophelp.com ENV 322 Complete Class Business - General Business Gaia Hypothesis. In Chapter 3, the Gaia hypothesis is introduced. It addresses two hypotheses; (1) life, since its inception, has greatly affected the planetary environment and (2) life has altered Earth’s environment in ways that have allowed life to persist. Do you agree with these two hypotheses? Why or why not? Energy and Food Supplies. 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.