If you flip two coins, the probability that both will come up heads is 1/4 1/2 3/4 0/4

The Anwser is 1/4 because 1 flip is 2 side possible but if you flip it twice you get a total of four and the chances of it hitting head twice is 25%

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.