There is no current consensus among biologists on the questions of how sex in Eukaryotes arose in evolution, what basic function sexual reproduction serves, and why it is maintained, given the basic two-fold cost of sex.
Excessive production of gas by bacteria is a common cause of intermittent abdominal bloating/distention. Bacteria can produce too much gas in three ways. First, the amount of gas that bacteria produce varies from individual to individual.
Ingestion of concentrated solutions (Â¡Ã£10%) can cause extreme irritation, inflammation, and burns of the alimentary tract can occur, and hollow-organ distention and rupture is a significant danger. Hydrogen peroxide enemas have caused colonic rupture, intestinal gangrene with gas bubbles, and acute ulcerative colitis.