Answer:
I think it is the forth one
They are similar because they are all colors in the spectrum and they are different because you cant seperate primary colors but you can seperate secondary
Have wavelengths that are longer than normal.
Answer:
Explanation:
density of galaxies would be
times higher which is equal to 50.81.
It means in a cube that today contains one galaxy the size of the Milky Way, we would instead find 50.81 galaxies this size.
You can round this off to 52