C.
The force the wind exerts on the surface of the rock while it blows past it can cause it to erode into irregular shapes.
        
                    
             
        
        
        
Atomic mass is determined by the number of protons plus the number of neutrons 
        
             
        
        
        
Answer: Your answer is B
Explanation: Because unicellular organism are very simple organisms such as bacteria.
 
        
             
        
        
        
Thermodynamics is the correct answer.