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.
tympanites - distension of the abdomen that is caused by the accumulation of gas in the intestines or the peritoneal cavity. ectasia, ectasis - dilatation or distension of a hollow organ. varicocele - dilatation of the veins associated with the spermatic cord in the testes. dilation.