Answer:
An underground cavern collapsed 
Explanation:
I did research
 
        
             
        
        
        
The tenth day because its half of 20
brainliest?
        
             
        
        
        
D. an asteroid because an asteroid is the only thing that can form a meteor crater. 
        
                    
             
        
        
        
Because we control them both in the same direction so if we where like some lizards that move each eye individually then we would see two images