Answer: Mouth.
Explanation:  
The mouth is known to be performing both the tasks of chemical digestion and mechanical digestion.
The food is ingested through mouth and the teeth perform the process of mechanical digestion by breaking down the food particles into smaller particles.
Then the saliva gets mixed into the food and the enzymes(amylase) present in the saliva helps in the digestion of carbohydrates.
So, mouth is the organ that performs the process of both mechanical and chemical digestion.
 
        
                    
             
        
        
        
The instrument that records and measures the seismic waves during an earthquake is a seismograph. It uses the vibration propagated by from the earthquake source's energy. It mainly uses a suspended pen that records the motion between itself and the paper film.
        
             
        
        
        
The answer would be too much exposure to the sun...
An excessive amount of sunlight can damage the skin. If you’ll notice, Even the effects of sunburn cause a wrinkly look to the skin.
        
             
        
        
        
The answer is "C) water exhibits cohesive behavior".