Which of the following is defined as the range of vapor concentration that will support combustion?

The code used to report a benign neoplasm of ureteric orifice of bladder is ____________________

Fill in the blank(s) with correct word

On a dental chart, two lines drawn through the entire diagram of a tooth indicates a/an ____

A) impacted tooth B) endodontic or root canal treatment C) tooth needs to be extracted D) tooth has been extracted