Some common problems include heartburn, cancer, irritable bowl syndrome, and lactose intolerance. Other digestive diseases include: Gallstones, cholecystitis, and cholangitis. Rectal problems, such as an al fissure, hemorrhoids, proctitis, and rectal prolapse.
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
