Adenine, thymine, cytosine and guanine are the bases of which molecule?

Adelaide, founded in 1836 and named for King William IV's wife, is in which country? "Adelaide's Lament" and "Luck Be a Lady" are from which musical? Adelheid Wette, Engelbert Humperdinck's sister, wrote the libretto for which 1893 opera about a fairy tale pair? In June 1942, Adeline Gray made the first jump with a parachute made of which material? What does the Portuguese word "adeus" mean? In ADHD, what word does the H stand for? Which word describes food that follows Jewish dietary law? Adidas products for which sport include cleats and the official ball of the 1998 World Cup?