Rubbing alcohol and vegetable oil soluble on insoluble?

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

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.