Misc: Valentine in an average lifetime, the average american gives flowers 136 times on __?

Questions

What is the capital city of Surinam?

What ceased to be legal tender in the U.K. on 30th June 1980?

Which Italian artist, circa 1487-1576 gave his name to a hair colour?

Which plant has flower parts apparently resembling the instruments of Christ's crucifixion?

Which country, the most populous in Africa, was suspended from the Commonwealth in 1995 for anti-democratic behaviour?