PLEASE HELP WILL GIVE BRAINLIEST

Explain why you would or would not have a lasik surgery if you wore contacts or glasses. describe how public opinions related to this surgery have changed over the years. in your own words, explain this surgery as though you are explaining it to someone who has no knowledge of the procedure

Many dental offices prefer preset trays because the use of these trays or what

In this model, what do p, s, and a bases represent?