Coal is formed when peat is altered physically and chemically. This process is called coalification.. During coalification, peat undergoes several changes as a result of bacterial decay, compaction, heat, and time.
On January 9, 2011, ABC Family announced the show would return for its fourth season on March 26, 2011. On February 2, 2012, ABC Family renewed the series for a fifth season. On October 9, 2012, it was announced that the fifth season of The Secret Life of the American Teenager would be the final season. The series finale aired on June 3, 2013.
Piper Perabo. Piper Lisa Perabo (born October 31, 1976) is an American film and television actress. She may be best known for playing CIA Agent Annie Walker on the spy drama series Covert Affairs, which ran on the USA Network for five seasons between 2010 and 2014.