Why are buffers important in living organisms?
Buffers prevent pH changes in body systems

Buffers cause acids to break down food

Buffers make bases work more effectively

Buffers kill bacteria and viruses

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?