Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Seeds of a pine cone are easily carried by the wind and dispersed because seeds have wings.
Why are seeds of a pine cone easily carried by the wind and dispersed?

The human eye detect can detect three colors of light.
How many colors of light can the human eye detect?

One-dimensional sinusoidal waves show the relationship among wavelength, frequency, and speed.

One-dimensional sinusoidal waves show the relationship among wavelength, frequency, and what?