Pollution caused the environment to become more darkly colored, so moths were selected to be blacks and greys.  Before pollution they were white and lighter colors.  <span />
        
             
        
        
        
I really hope this helps!
The main dangers worldwide are population growth and resource consumption, climate change and global warming, habitat conversion and urbanisation, invasive alien species, over-exploitation of natural resources and environmental degradation.
        
             
        
        
        
A cybernetic hand, that is powered by one's nerve impulses. 
        
                    
             
        
        
        
The answer to ur question is A