Sir Elton Hercules John CBE (born Reginald Kenneth Dwight on 25 March 1947) is a multiple Grammy and Academy Award-winning English pop/rock singer, composer and pianist. Source(s): http://en.wikipedia.org/wiki/Elton_John
The âPerc Testâ. A Perc Test (also known as âPerk Testâ, and more formally known as a Percolation Test), is a soil evaluation that tests the rate at which water drains through soil.
CEC is used as a measure of soil fertility, nutrient retention capacity, and the capacity to protect groundwater from cation contamination. It is expressed as milliequivalent of hydrogen per 100 g of dry soil (meq/100g), or the SI unit centi-mol per kg (cmol/kg).