Coal and diamonds both consist mainly of which chemical element?

Which American shared the 1925 Nobel Peace Prize for his plan to reschedule German reparations after World War I? Coach Scotty Bowman led which NHL team to the Stanley Cup Final three times in the 1990s, winning twice? Which coach led UCLA to 10 NCAA men's basketball titles between 1964 and 1975? Coal and crow are shades of which color? Which novelist created Coalhouse Walker Jr., Daniel Lewin and Billy Bathgate? The Chrysler Freeway, a stretch of Interstate 75, runs through which Michigan city? In which Shakespeare comedy is Cobweb a fairy, not a spider? In the 1950s Howard Worden developed a classic spinner fishing lure named for which animal's tail?