Red shift data shows that galaxies are o expanding o shrinking o moving away o moving closer

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Which branches of natural science include the study of an organism that lived 10 million years ago

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Which type of reaction is shown in this energy diagram ?