1 The sun's rays are strongest during the hours of 10 a.m. to 4 p.m. The sun's rays are also stronger at higher altitudes and lower latitudes (closer to the tropics). Reflection off water, sand, or snow can make the sun's burning rays stronger.  Sun lamps can cause severe sunburn.
Division Marchantiophyta&#151Liverworts, genus Marchantia. : The thallus of the haploid gametophyte (n) grows flat on moist ground, and it is many-cells thick. Pores to permit gas exchange are in the top surface, and there are air spaces within the top zone of the thallus. Water is absorbed throughout the surface.
The Urantia Book (sometimes called the Urantia Papers or The Fifth Epochal Revelation) is a spiritual and philosophical book that originated in Chicago sometime between 1924 and 1955. The authorship remains a matter of speculation.