For the past 5 days, four times as many samples as usual submitted for ionized calcium were below the reference range. The same phlebotomist collected all the samples. When questioned, she said that the samples were collected using syringes from an arterial blood gas collection kit. What is the best explanation of these results

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.