Answer:
Genetic variation is essential for natural selection. It helps maintain the health of the population 
 
        
             
        
        
        
Answer: 
So basically, when the osmometer is, the solution in the beaker is supposed to be hypotonic and relative to the solution in the dialysis bag. So when that situation occurs, the net movement of water is transferred into the bag. As the water slowly / hastily moves into the bag, the varying level of pressure is generated which forces the water to move up.
 
        
             
        
        
        
Answer:
it is not possible to check for a real pulse on a CPR mannequin
Explanation:
Based on the information provided within the question it can be said although extremely helpful, one limitation that CPR mannequins have is that it is not possible to check for a real pulse on a CPR mannequin. Being able to check the pulse of the victim is extremely important as it allows you to see how serious the victim's condition is and take appropriate measures.
 
        
             
        
        
        
Answer:
The correct option is number 3.  A deficit of appositional bone growth would not be life threatening.
Explanation:
Appositional bone growth can be defined as the thickening of the bones due to increase in the number of bone tissues at the surface. In this kind of bone growth, the diameter of the bone increases rather than the length of the bone. This can lead to deformation of the bone but it is not life-threatening.
Rest of the options 1, 2 and 3 are serious disorders and can eventually lead to death.