11 Which strait connects Black Sea and Sea of Marmara?

Bosphorus

12 Which strait connects Red Sea and Mediterranean Sea?

Suez Canal

13 Which strait connects Mediterranean Sea to the Atlantic Ocean?

Strait of Gibraltar

14 Where is Strait of Malacca located?

 Between Indonesia and Malaysia

15 Where is Bab-el-Mandeb Strait located?

Between Yemen and Djibouti

16 Where is Bering Strait located?

Alaska-Russia

17 Where is Dover Strait located?

England-France

18 Where is Strait of Hormuz located?

Oman-Iran

19 Where is Gibraltar Strait located?

Spain-Morocco