Assume for a moment that the summer solstice has just occurred in the Northern hemisphere. What date below is closest to the summer solstice? (1) March 21
(2) June 21
(3) September 21
(4) December 21

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.

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

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