The factors that affect personal health that are the most easily controlled are c) lifestyle.
You can easily change the way you are living, whereas these other things cannot be. 
        
             
        
        
        
 <span>Because the left ventricle has a stronger muscular wall than the right ventricle?</span>
        
             
        
        
        
A. the kelvin temperature scale
        
             
        
        
        
The three chromosomal aberration: 
1.) Inversion - breakage of chromosome in two places , the other piece of DNA is re- inserted into the chromosome.
2.) Translocation - the one piece breaks off and attaches to another chromosome. 
3.) Deletion - the loss of segment of chromosome.
-ace