Which piece of evidence from the article BEST supports the idea that Zartarian's work helps to
protect human health?
Exposure science is the study of how humans

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 answer is symmetrical : )