Match these items.

1. a halogenated gas that may damage the ozone layer
benzene
2. world war i poison gas
freon
3. a typical reaction of alkenes
phosgene
4. insecticide
addition
5. aromatic molecule
ddt
need quickly plzz

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.