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.
While other factors play a role, internet subscription rates break down largely by age, income, and education level. A full 80 percent of people between 18 and 29 have broadband in their homes, a number that drops to 43 percent for those 65 and older.