One word answer is Mutation nothing is perfect but some bacteria also have changes from conjugation aka sex between bacteria even though they are asexual organisms
The <u>bladder </u>is in the hypogastric region.
Hypogastric Region- The structures around the pelvic bone are located in the hypogastric area. These include the prostate in men and the womb and ovaries in women, as well as the bladder, a section of the colon and rectum, the anus, and several reproductive system organs.
Bladder- A little above and behind pubic bone in the pelvis, the urine bladder is a muscular sac. The bladder is roughly the size and shape of a pear when it is empty. The kidneys produce urine, which then passes via capillary called ureters and into the bladder. Urination can be restricted and rare because to the bladder's ability to hold pee.
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The build up of lactic acid will need oxygen to break it up. Lactic acid is why muscles feel tired after excess exercise
It’s True plz tell me if this is right