The answer is c because the other are soft
        
             
        
        
        
The vibrations travel faster than noise. When the ground moves it is coming directly from the source, and when you hear it the sound waves are big and take more time to travel.
        
                    
             
        
        
        
Answer: Respiration
Explanation: 
Respiration is the process of chemical energy stored in food which occurs through various enzyme controlled reactions. Some of the energy generated is stored as adenosine triphosphate (ATP) Hence, chemical energy from food is converted to chemical energy in the cell which the cell stores as ATP
 
        
             
        
        
        
Answer:
A
Explanation:
Cells moving faster is a benefit because it can get air and blood to its area faster