Answer:
Explanation:
zinc zn 30 65.38 u 30 34 30
 
        
             
        
        
        
B. Resistance is the tendency for materials to oppose the flow of electric charges.
        
             
        
        
        
I attached the image related to your concerned question. 
In theory, the part of the brain that is responsible for the sleep wake cycle is the hypothalamus; specifically, the ventrolateral preoptic nucleus of the hypothalamus. In the image, the location of the hypothalamus is pointed by the green square. 
 
        
        
        
Answer:
gravity
Explanation:
Gravity from Latin gravitas meaning weight for gravitation is a natural phenomenon by which all things with mass or energy including planets stars or galaxies and even light are brought toward or gravitate toward one another gravity gives way to physical objects