Two forms of solid carbon, diamond and graphite, differ in their physical properties due to the differences in their
(1) atomic numbers
(2) crystal structures
(3) isotopic abundances
(4) percent compositions

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explanation:

dasdad

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.