Solved by a verified expert:Write a 350- to 525-word essay addressing the following points:•In your own words, describe how cancer occurs in human cells.•What changes take place and how does a normal cell progress to a cancerous cell?•Given what you have learned about cancer, propose an explanation to explain why cancer can be difficult to treat.•After all the years of research, why don’t we have a viable cure for all cancers?Cite all references in APA format.