Sexual reproduction cells. Or just sex cells
        
             
        
        
        
Angiosperms have a vascular system and can live is harsher environments which means they can reproduce a lot more often and faster. 
        
                    
             
        
        
        
Answer:
It is individual organisms change their genes to adapt to their environment.
correct answer is A
 
        
             
        
        
        
At this point the enzyme is denatured.