How can i change my username on here ???

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.