MA is Mfg Plant Code (see http://www.harriger.com/exptire.htm), L9 is a tire size code, ABCD is optional manufacturer info, 036 is mfg date (in this case third week of unspecified year ending in 6, but not 2006) The newer tires are using 4 digits, the first 2 = the week, and the last 2 = the year. For example 4202 = 42nd week of 2002.
Desertification is a type of land degradation in which a relatively dry land region becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife.esertification often causes rural lands to become unable to support the same sized populations that previously lived there. This results in mass migrations out of rural areas and into urban areas, particularly in Africa.
This process is called desertification. Deserts form in different ways Â· Subtropical deserts: formed when air at the equator (called the doldrums) rises and spreads to around 30 N and 30 S latitudes (called the Horse Latitudes). It dries out as it sinks and becomes dry wind bringing no moisture and zapping any from the surface. Diagram.