When an employee does the work necessary to remove physical dirt or food residue from a surface, that is referred to as?

Igotta why is there only 2 semesters and 4 quarters and not 4semesters and 4 quarters? 1 quarter for each semester? ? is this a dumb question?

Which statement about sculptures depicting humans made in ancient egypt, greece, and the roman empire is true? question options: they had arms and legs that didn't protrude so the sculptures would last an eternity. they could be made using formulas, could show ideal beauty, or could be realistic. they showed the common man. they were made using bronze.

Artworks made to be used in a ritual context often have what kind of meanings in addition to their appearance and visual impact?