They are primarily responsible for maintaining and changing posture, locomotion, as well as movement of internal organs, such as the contraction of the heart and the movement of food through the digestive system via peristalsis.
Internet Users in the U.S.A. (2016*) 1  Share of U.S. Population: 88.5 % (penetration) 2  Total Population : 324,118,787. 3  Share of World Internet Users: 8.4 4  %. Internet Users in the World: 3,424,971,237.
But cost and access have also become more prominent reasons that the remaining unconnected individuals still arenât online. In 2007, Pew reported that 11 percent of offline Americans couldnât afford it; in 2013, that group represented 19 percent of respondents (down slightly from 21 percent in 2010).n Wednesday, the Internet was surprised to learn that a solid 15 percent of Americans arenât online. A new report by the Pew Internet and American Life Project notes that even though more and more aspects of daily life are moving online, a significant portion of Americans donât use the Internet.