Answer:B,C,D
Explanation:
Thermodynamic  efficiency is given by

 efficiency can be increased by Keeping
 efficiency can be increased by Keeping  constant and increasing
 constant and increasing 
Keeping  constant and decreasing
 constant and decreasing  
 
by increasing 
by decreasing  ratio
 ratio          
 
        
                    
             
        
        
        
Answer:
The turning points are those instants, moments or situations that happen in an absolutely unexpected way, as a result of which your life changes ... and nothing is the same as before. 
 
        
                    
             
        
        
        
They begin to adapt into their new location. They then end up having adaptations to help them survive.