Cystic fibrosis affects the cells that produce mucus, sweat, and digestive juices. It causes these fluids to become thick and sticky. They then plug up tubes, ducts, and passageways.
It is an inherited life-threatening disorder that damages the lungs and digestive system.
<span>What is the ideal duration of one complete menstrual cycle?
-28 days
</span>
Through education and real world experience like volunteer work
The Answer is true i think
