Composition of the human body organisms. Composition of the human body Body composition may be analyzed in terms of molecular type e.g., water, protein, connective tissue, fats (or lipids), hydroxylapatite (in bones), carbohydrates (such as glycogen and glucose) and DNA. In terms of tissue type, the body may be analyzed into water, fat, muscle, bone, etc. In terms of cell type, the body contains hundreds of different types of cells, but notably, the largest "number" of cells contained in a human body (though not the largest mass of cells) are not human cells, but bacteria residing in the normal human gastrointestinal tract. Almost 99% of
Society for the Psychological Study of Social Issues ways, including active engagement in the scientific study of human behavior in critical social situations, sharing the results of that research in scholarly settings, and providing relevant research findings to those engaged in developing public policy. SPSSI members are concerned with both U.S. and international issues, and SPSSI has been affiliated with the United Nations as a Non-Governmental Organization (NGO) since 1987. While SPSSI has focused primarily on U.S. policy in the past, its international membership is constantly growing and international issues have become a larger part of its work. SPSSI writes policy briefs, sponsors advocacy days, and trains its