The Des Moines River flows southeast across which state to join the Mississippi?

Which animal word links cub, ursine, panda and polar? In 1943, U.S. pennies were made of steel coated with which metal, a mineral also essential to the human body? Potassium has which atomic number, also referred to by the rare adjective "decennoval"? Depicted as a snake, Wadd was a pre-Islamic moon god on which peninsula? Though sleeping elsewhere during the Blitz, which prime minister still worked and took meals at No. 10 Downing Street? Unlike a wireless phone, what is a telephone connected by a physical wire or cable called? Which word means unconventional, and could also describe a drummer who can't keep time? D.O. can stand for doctor of what, a field using manipulative therapy along with conventional medicine?