Fill in the blanks with either increases or decreases.

As a water wave approaches the shore, and the water becomes more shallow, the speed of the wave blank and the wavelength blank.

As a water wave approaches the shore, and the water becomes more shallow, the speed of the wave decreases and the wavelength decreases.

As a water wave approaches the shore, and the water becomes more shallow, the speed of the wave decreases and the wavelength decreases.