Calcium carbonate latter is especially evident in day-to-day life of people who have hard water. Water in aquifers underground can be exposed to levels of CO much higher than atmospheric. As such water percolates through calcium carbonate rock, the CaCO dissolves according to the second trend. When that same water then emerges from the tap, in time it comes into equilibrium with CO levels in the air by outgassing its excess CO. The calcium carbonate becomes less soluble as a result and the excess precipitates as lime scale. This same process is responsible for the formation of stalactites and stalagmites in limestone
Hang Down Your Head released in 2003. It was later appended as a bonus track to her 2003 album "World Without Tears". Gothic rock ensemble Human Drama recorded the song for their covers album "Pinups", which was intended as a tribute to the various artists that had influenced them. Country artist Jack Ingram has played the song at live concerts, and his version was recorded for his live debut "Live at Adair's" in 1995. Adapted from the "Hang Down Your Head" liner notes. Hang Down Your Head Hang Down Your Head is a song by Tom Waits appearing on his 1985 album "Rain Dogs".