What are kind of variable is letter grade described as?

What is the Greek word for book? What do the words on William the Conqueror's tombstone mean when translated from Latin to English? Bakit naging bayani si heneral gregorio del pilar sa tirad pass? Does MLA format require double spacing? What eats a dog-whelk? How do you say 'Not Microwavable' and 'Not Dishwasher Safe' for a plastic bottle in Spanish? 8 more than twice n? How do you say 'first love' in Japanese? Courses offered in university of san carlos main campus? How do you say sorry in Spanish? How do you say goodmorning in vhenda? What could be done if you are told your uterus has dropped and it hurts every time you have intercourse? What is edetaaldr unscrambled into a Spanish word? What items would you be most likely to keep in a database? Top 10 populasyon sa buong mundo? How do you pronounce 'fàilte' in Scottish Gaelic? What does it mean to have one's honor stolen? What does Cead Mile Faile mean and what language it is in? What is 'Say hello to Nancy for me' in Italian? How do you spell Abby in spanish?