Francis Crick discovered the DNA structure.
        
                    
             
        
        
        
Answer:
Decomposers get nutrients and energy by breaking down dead organisms and animal wastes. Through this process, decomposers release nutrients, such as carbon and nitrogen, back into the environment. These nutrients are recycled back into the ecosystem so that the producers can use them
Explanation:
  
        
                    
             
        
        
        
Answer:
conformational change in troponin
Explanation:
The troponin complex plays an essential role in the thin filament regulation of striated muscle contraction.
 
        
             
        
        
        
13-13= 0, 19-13= 6, so then 0-6= -6