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.
How the internet has changed the world. There are 2,405,518,376 internet users in the world, a 566.4% growth since 2000. As the users grow, the world changes.ow the internet has changed the world. There are 2,405,518,376 internet users in the world, a 566.4% growth since 2000. As the users grow, the world changes.