Dr. Charles is using fMRI when she uses strong magnets to track changes in the brain's blood-oxygen levels.
Functional magnetic resonance imaging or (fMRI) is a techique used to measure brain activity by detecting changes associated with blood flow. When an area of the brain is in use, blood flow to that region will increase.
 
        
             
        
        
        
D because all the other answer are negative feedback
 
        
             
        
        
        
Turbines, which then transfer the tidal energy into kinetic energy.
        
                    
             
        
        
        
The pear is healthy because it contains more vitamins, minerals and fiber. Carbohydrates are the main source of energy in human diet. All the body cells depend on glucose which makes it the preferred source of energy. The brain and the nervous system for example run directly off glucose. The body can convert protein to glucose during the low supply of glucose in the body.