1. Which sea does River Elbe empty into?   Mediterranean Sea   North Sea   Baltic Sea   Hint Half-n-half Clue   2. Which sea does River Danube empty into?   Adriatic Sea   Black Sea   North Sea   Half-n-half Clue   3. River Douro and River Tagus empty into the _______.   English Channel   Atlantic Ocean   Bay of Biscay   Half-n-half Clue   4. Which sea does River Po empty into?   Adriatic Sea   Black Sea   North Sea   Half-n-half Clue   5. Which sea does River Don empty into?   Sea of Azov   Caspian Sea   North Sea   Half-n-half Clue   6. Which sea does River Rhone empty into?   Caspian Sea   Adriatic Sea   Mediterranean Sea   Half-n-half Clue   7. Which sea does River Vistula empty into?   Baltic Sea   North Sea   Black Sea   Half-n-half Clue