It's called muscle spasticity. Or in common terms, muscle cramp. 
Hope this helps.
        
             
        
        
        
Answer:
50 50 you have a large letter an a lil one that means one's dominant an the other isn't 
 
        
             
        
        
        
Answer:
B. Premature stop codon mutation
Explanation:
 
        
             
        
        
        
Answer:
A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem.
Explanation:
Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web.
 
        
             
        
        
        
That would be integumentary system