6. How can understanding cause-and-effect relationships help someone to understand
the danger of a threat to an ecosystem? Use evidence from both articles to support your
answer.

blue

light-years

magnitude

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.