Answer:
The central nervous system is made up of the brain and spinal cord
Explanation:
ion if that's the answer you were looking for but here go.
 
        
             
        
        
        
Answer:
just fruits added with whatever you like. 
fruits most importantly 
 
        
                    
             
        
        
        
The correct answer is option D, Plasma
Plasma is the condition where a hot gas is ionized. It consists of equal numbers of positive and negative ions. It is an electrically conducting environment which is considered as the fourth state of matter. Plasma gases are affected by electric and magnetic waves as compared to the neutral gases (which remain unaffected by electric and magnetic wave) due to the presence of negative and positive ions.  
 
        
                    
             
        
        
        
<span>Amylase needs an optimum pH for its activity. It is in the range of 6-7. Below or above pH will denature this enzyme. The pH level is optimum for this enzyme in the mouth and hence it catalyses the break down of sugar. The pH level of stomach is lower than its optimum level duet to the activity of gastric acid. Hence the enzyme becomes inactive in the stomach.</span>
        
             
        
        
        
If we dont have enzymes then we would become malnourished as our body wouldnt be able to absorb the nutrients. Enzymes work in digestion to break down the food we eat