Five main systems of the body include; Nervous system, Circulatory system, Respiratory system, Digestive system and Excretory system.However another very important system; the â¦ Sensory system is present but is not among the list of first five important ones or you may call it the sixth important system.
As of 2010-2014, the total population of Clear Spring is  423, which is 7.03% less than it was in 2000. The population growth rate is much lower than the state average rate of 11.16% and is much lower than the national average rate of 11.61%.
The Borough of Sinking Spring had a population of 4,027 as of July 1, 2015. Sinking Spring ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Pennsylvania. See peer rankings below.eneath the boundary map are tables with Sinking Spring population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.