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.
Marchantia polymorpha, sometimes known as the common liverwort or umbrella liverwort, is a large liverwort with a wide distribution around the world. It is variable in appearance and has several subspecies.
Meranti is a versatile wood with many subspecies, sources and purposes. Philippine or Lauan mahogany is another, somewhat generic term for meranti that is harvested and is available in abundance on a worldwide basis.The majority of meranti for domestic use is imported to the United States from Southeast Asia.olored gray or yellow, blending to reddish depending on where it's harvested, meranti ages to a golden brown with continued exposure to light. Meranti is a hardwood. On the Janka scale -- a scale that ranks wood for hardness -- meranti varieties rank between 800 and 825.