Symptoms & Causes of Gas in the Digestive Tract What are the symptoms of gas? The most common gas symptoms include burping, passing gas, bloating, and pain or discomfort in your abdomen. Gas symptoms vary from person to person. Burping, or belching, once in a while, especially during and after meals, is normal.
years and years ago the horses Hoof was melted and used as glue. All of the unused animal parts that aren't fit for making hotdogs (horses don't usually end up in hotdogs) might end up as glue or gelatin. It is the protein that makes the glue sticky and the gelatin wiggly.
Glue is a sticky material (usually a liquid) that can stick two or more things together. Glue can be made from plant or animal parts, or it can be made from oil-based chemicals. The first glues may have been natural liquids that come out of trees when they are cut. Later people learned to make glue by boiling animal feet, cartilage or bones. Some very strong glue is made from fish bones, rubber or milk.