According to this guide, why are cover letters important?, assignment help

Review a guide to writing cover letters, located at https://owl.english.purdue.edu/owl/resource/549/01/.
1. According to this guide, why are cover letters important?
2. Describe the structure of a cover letter. How should you format it overall? What information should each paragraph contain?
3. Based on this guide, other course materials, and your own experience, what are the key factors an employer may take into consideration when determining whether or not an applicant receives a job interview?
Identify two (2) key skills that you learned during the professional communications course that you think will add to your communication effectiveness.