Look for information from 3 companies United States characterized by an image or strategy of working for Environmental Sustainability.

1. Describe each company and what they do regarding environmental sustainability issues. 2. Identify whether the company incurs in externalities that cause or contribute to those same aspects of environmental sustainability for which it works. 3. Describe whether the company's actions are Strengths, Weaknesses, Opportunities or Threats.

4. add web page link