Region covered by area codes 601 and 769. Area codes 601 and 769 are the telephone area codes for central Mississippi. The main area code, 601, was one of the original area codes implemented in 1947, and served all of Mississippi.n 1999, area code 662 was created in the northern half of Mississippi, including the Mississippi side of the Memphis area. The 1999 split was intended as a long-term solution, but within five years 601 was close to exhaustion due to the proliferation of cell phones, particularly in the Jackson area.
Lichen is the product of a symbiotic relationship between a fungus and a photosynthetic organism, usually a photosynthetic bacteria or algae.
The information below is from other link.== Lichens represent Symbiotic associations of fungi (mycobionts) and photosynthetic partners (photobionts).These associations always result in a distinct morphological body termed a thallus that may adhere tightly to the substrate or be leafy, stalked, or hanging.est Answer: There is a plenty of information on the link provided by wikipedia = Just click on it = http://en.wikipedia.org/wiki/Lichen 1) Lichens do not have any symbiotic relationship with trees. 2) They do not bring any water / nutrients to trees 3) They do not help in keeping forest clean.