1.) Use Table S to determine the atomic radius for K and Ca. Using the numbers you found, describe the periodic trend for the atomic radius of an element. *

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.

let that person have a turn to speak : )

i wish i could but this one is weird give me abc and i can solve it.