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.
The best and most correct answer among the choices provided by the question is the fourth choice "this is an example of causation"
Causation<span> is the "causal relationship between conduct and result". That is to say that</span>causation<span> provides a means of connecting conduct with a resulting effect, typically an injury.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
Answer:
periosteum
Subchondral tissue.
The tough, thin outer membrane covering the bones is called the periosteum. Beneath the hard outer shell of the periosteum are tunnels and canals through which blood and lymphatic vessels run to carry nourishment for the bone. Muscles, ligaments, and tendons may attach to the periosteum.
