Aerobic exercise like running, jogging, swimming and walking because all of these get your heart rate up.
        
                    
             
        
        
        
Answer:
Water
Explanation:
You cannot survive long without water.
 
        
                    
             
        
        
        
First is the brain, spinal cord, and heart begin to develop. Then A blood vessel forms which will later develop into the heart and circulatory system.
        
                    
             
        
        
        
<span>Just like wearing a seat belt in a car, it is important to go to the doctor and dentist for regular checkups once every _____. 
b. year 
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