Which observation is evidence of refraction in this photo? A. The man's arm is clearly seen under the water. B. The snorkel in the man's mouth appears yellow C. The top of the man's head appears disconnected from the rest of his head D. The water in which the man is swimming is transparent

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.