Crossing over and individual chromosone assortment
        
             
        
        
        
They are found in the chromosomes
        
             
        
        
        
Answer:
help interpret earth's past
great environmental indicators
created from living things that are buried
help us understand day to day life forms and ancestors
Explanation:
 
        
                    
             
        
        
        
Explanation:
Percentage w/v means that weight of solute present in 100 ml of a solution. Hence, 15% w/v means that 15 gram of solute per 100 ml of solution.
Hence, for 2 L (or 2000 mL) preparation the amount of mass will be calculated as follows.
                  
                   = 300 g
Thus, we can conclude that weight of Tris-HCL required is 300 g. 
 
        
             
        
        
        
Answer:
Cold weather triggers the underfur to grow each winter.
Explanation:
this is because they would freeze in the cold water in the winter.