The answer is D. Light bends as it passes from one medium to another
Other digestive diseases include: ... Intestinal problems, such as polyps and cancer, infections, celiac disease, Crohn disease, ulcerative colitis, diverticulitis, malabsorption, short bowel syndrome, and intestinal ischemia. Gastroesophageal reflux disease (GERD), peptic ulcer disease, and hiatal hernia.
Answer:
five billion, six hundred and eighty two million, four hundred and fifty thousand and three.