Put the following elements in
increasing order
of ionization
energy
Mg, AI, CI, Ar

is there multiple choice answers?

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.

i think   the answer is c hope i'm right

i do not get it   at all