Explain what helps convert non-rich oxygen blood cells back to oxygen rich cells?

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

the correct answer would be b) volume versus temperature, because they are also directly proportional.