I really need help!! How would the color of light from a star
moving horizontally relative to the line of sight
change?

The Doppler effect is the change of wavelength of light when its source moves along the line of sight with respect to the observer.

Explanation:

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate