<span>The most common airway obstruction is the tongue.
It blocks the upper airway causing asphyxiation in many patients who are
comatose or have suffered cardiopulmonary arrest. An airway obstruction is
considered to be life-threatening and should get immediate medical attention.
The severity of the obstruction varies on a case to case basis and a people
should be aware how to properly perform first aid to avoid further
complications. If a person has not been able to breathe a possible tracheotomy
will be performed by the rescuer as a quick response. This is to enable the
passage of air back to the brain. </span>
Digestion, exercise, daily activity and basal expenditure <span />
Kidney is excretory. Pancreas and liver are digestive. Spleen is lymphatic. Hope this helps. :)
The correct answer is
<span>B. red shift of distant galaxies.
Basically, the farther it is the more space there is to stretch and expand. This means that the further away the galaxy is the further away from us it is moving. Scientists observe this through observing red shifts which and all their observations point out to the idea that the universe is constantly expanding.</span>
<span />
