List 4 distinct features of organic chemistry and give 3 reasons for these special features​

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Why doesn't heat added to water make the tempature rise above 100c

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.