They both reproductive Pacific cells
        
             
        
        
        
Answer:
c the comet turns into a shooting star and is gone forever
 
        
             
        
        
        
I'd say D cause ice is kinda more likely to do the job
        
             
        
        
        
The answer is : All boats at all hours.  Maintaining a proper lookout using human sight and hearing applies to All boats at all hours,  specially at extreme weather conditions.  They should keep up the watch at all times.
 
        
                    
             
        
        
        
Answer:
The climate change may turn diseases spread in different areas of the Globe.
Explanation:
Climate change is producing the environment to evolve constantly. We may see rising temperatures across the Globe and with it some changes on rainfall as well. Those features will dramatically change the whole environment and could possibly turn habitats, that were in the past not associated with disease vector insects, into places like the northeastern from United States and thus, mosquistoes like the the vector of malaria can be a possible disease to hit developed countries.