A consumer product such as a medicine must list its "active" what?

What is the console of keys on a piano or typewriter called? Which physicist, who in 1900 postulated that energy is radiated in quanta, has a fundamental constant named for him? Which 9-letter constellation, named for a chained princess of Greek myth, begins and ends with the letter A? Which constitutional amendment guaranteeing equal rights for women was sent to the states in the 1970s but fell short o… What is a humidity-controlled container designed for storing cigars called? A contemporary review of which 1851 novel asked "Who would have looked for poetry in blubber"? Which author published "Wuthering Heights" in 1847 under the pen name Ellis Bell? A controversial 1979 war film was based on a 1902 work by which author?