That's why I always recommend starting with a blog or website first. Create a content website on a very focused theme/niche. Build up traffic to that website through continuous, useful updates. Learn how to market the website, and as your following grows, then you'll have people to promote your social network to.
Human body. The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems. They ensure homeostasis and the viability of the human body. It comprises a head, neck, trunk (which includes the thorax and abdomen), arms and hands, legs and feet.
Updated March 15, 2017. Here's a look at the chemical composition of the human body, including element abundance and how each element is used. Elements are listed in order of decreasing abundance, with the most common element (by mass) listed first. Approximately 96% of body weight consists of only four elements: oxygen, carbon, hydrogen, and nitrogen.