The gently sloping land part that remains partly submerged under seawater is ______

The type of waves that are characteristic of deeper portions of the sea?

The most common type of flood plains are ______

Which among the following is not true about cavitation?

Type of reef with an annular, circular or semi-circular coral reef surrounding a lagoon is called ______

The variously shaped depressions of different dimensions that are developed in the riverbed are called ______

Every major river is associated with a valley of its own.

There is a spontaneous change from liquid to vapour state and back to liquid state at the point of fall of waterfall.