Falsifiability is an important principle in science philosophy. A theory or hypothesis only be considered scientific if it has the possibility of rejection and acceptance. It means, before acceptance of hypothesis it must be disprovable.
Example: "All swans are white" is an example of falsifiability because black swans are also there.
<h3>The longer urethra of males means bacteria must travel farther to the bladder to cause an infection. Forceful urination is accomplished by contraction of abdominal muscles.</h3>
