Solved by a verified expert :1. Explain the differences between rich media and lean media and discuss theadvantages of each.2. Why is it important to spend extra time reviewing and polishing the beginning andend of a message?3. It is common for companies to post their codes of ethics on their websites. Usingthe information from Chapter 1 in your textbook, why is it important for acompany to educate its employee on ethics?4. What are the chief barriers to communication? List, name, and provide anexample of how a company experiences these barriers in the workplace .