The bulk of the heart rests on the side of the body. On the left side
 
        
             
        
        
        
Жила была царевна но туда ей бросил лёд
        
             
        
        
        
Discontinuous variation <span> refer to large, conspicuous differences from the parents</span>
This is where individuals fall into a number of distinct  categories, and is based on features that cannot be measured across a complete range
continious variation refer to small, indistinct differences from the normal condition.
Milk yield in cows, for example, is determined not only by their genetic make-up but is also significantly affected by environmental factors such as pasture quality and diet, weather, and the comfort of their surroundings
        
             
        
        
        
Answer:
lowering the activation energy needed for the reaction to start
 
        
                    
             
        
        
        
Answer: The DNA double helix is held together by two types of bonds,
covalent and hydrogen. 
Explanation:  Covalent bonds occur within each linear strand and strongly
bonds the bases, sugar and phosphate groups.