For resonance forms of a molecule or ion, a. one always corresponds to the observed structure b. all the resonance structures are seen in various proportions c. the observed structure is an average of the resonance forms d. the same atoms need not be bonded to each other e. there cannot be more than two resonance structures for a given species

sup bro, im dumb, but this is what i found xd

"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"