An important characteristic of urine is its specific gravity or density, which is

within 30 of the equator hope this

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

hope it ,

bioteacher101