Answer: climate change
Explanation: less rain means less water for consumption.
 
        
             
        
        
        
Answer:
Volcanic islands are formed as a crustal tectonic plate containing an ocean moves over a magma hot spot. 
... This magma carries an enormous amount of heat, and it can then be released into the crust and createmagma chambers there.
 
        
             
        
        
        
D Eurasian plate and Australian plate
        
                    
             
        
        
        
Thermal Convection Causes Tectonic Plates To Move
Hope This Helps
        
             
        
        
        
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