Which is a narrow stretch of land linking two landmasses and separating two water bodies?

Which is the largest ocean in the world?

The vast body of salt water that covers a considerable portion of the Earth's surface is called as an :

The up and down movement of sea water caused due to wind is called :

The regular movement of water from one part of the ocean to another is called :

The fall of water level is called :

The rise of water level is called :

Which is the third largest ocean in the world?

Which is the second largest ocean in the world?

Which one of the following is an enormous source of energy?