Yes; therefore water is denser than air.
Upon what does the weight of a substance depend?
Its weight depends upon its density.
How much heavier is steel than water?
Steel is seven times as heavy as water, and is, therefore, seven times as dense.
How much denser is mercury than water?
Mercury is thirteen times as dense as water, and is, therefore, thirteen times as heavy.
Why can a bird move through the air?
Because the particles of air can be separated by the bird.
Why can a fish swim through the water?