Why a fish can not servive out of water?

Why a bucket of water is lighter when in water than when it is taken out of water?

Why water does not come out of a dropper unless its rubber head is pressed hard?

Why can't sodium be stored in water ?

If a marine fish is placed in a fresh water equarium, will the fish be able to surviver ? Why or why not ?

A fish looking up through the water sees the outside world contained in a circular horizon.If the refractive index of water is 4//3 and fish is 12 cm below the surface of water,then the radius of the circular horizon is

A fish swims in a glass tank.A person,whose eye is above the level of water ,sees two fishes.Draw a ray diagram to illustrate this.

Why are the lower amines soluble in water ?