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.
The Internet in Africa is limited by a lower penetration rate when compared to the rest of the world. Measurable parameters such as the number of ISP subscriptions, overall number of hosts, IXP-traffic, and overall available bandwidth all indicate that Africa is way behind the  digital divide .hile Africa accounts for 15.0% of the world's population, only 6.2% of the World's Internet subscribers are Africans. Africans who have access to broadband connections are estimated to be in percentage of 1% or lower.