Please provide a short explanation for each of these questions.

1. Why is it important to make clear and convincing oral presentations to individuals or groups, listen effectively and clarifies information as needed, facilitate an open exchange of ideas, and fosters an atmosphere of open communication? (2000 characters maximum)

2. Why is it important to express facts and ideas in writing in clear, convincing, and organized manners appropriate to the audience and occasion in the field of Cybersecurity? (2000 characters maximum)