Do stars form mainly in the central disk or the arms of a spiral galaxy?

the answer would be d : p

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.

answer; /// the shaft of the hair consists of dead cells;