Explain the process of digestion of food in small intestine of man

Pancreatic juice is released by the pancreas into the small intestines while the liver produces bile. In the pancreatic juice is trypsin that digests protein into small peptides, bile emulsifies fats. Most of this digestion occurs in the duodenum. After digestion, they are absorbed in the ileum

the answer is:

carbon dioxide

the supermassive black hole is in the middle of the galaxy.