There's good reason why vitamin D is called “the sunshine vitamin.” When your skin is exposed to sunlight, it makes vitamin D from cholesterol. The sun's ultraviolet B (UVB) rays hit cholesterol in the skin cells, providing the energy for vitamin D synthesis to occur.
The first step in scientific inquiry or the scientific process is to pose or ask a question concerning a natural and or intriguing phenomenon. The subsequent steps involve formulating an hypothesis, and designing and then carrying out the experiment.
