If a runner covers a distance of 5km within half an hour, what was her average speed? *

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.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

i think its 5049.

i hope this !