A. Limnetic Zone
B. Pauli
C. Profundal Zone
D. All of these

A. Europe
B. Egypt
C. South America
D. Asia

A. Paris
B. Venice
C. Canada
D. Paris

A. Nauru
B. Vietnam
C. Petroleum
D. Samoa

A. Identical
B. Similar
C. Swarm
D. Remain

A. lesson
B. rules of conduct
C. head
D. rules of conduct

A. Since
B. As
C. By
D. To

A.  Instantaneous
B. Boaster
C. Verbose
D. Pedantic

A. Apathy
B. Hostility
C. Quiet
D. None of these

A. Refund
B. Splendid
C.  Lessen
D. Big