Answer:
It is circulatory system and the digestive system.
Explanation:
 
        
             
        
        
        
Hi 
i hope you are having a great afternoon
your answer is:   D)Alkaline solution is not a property of water. 
I hope this helped you out have great day 
FAithRawlins14
 
        
             
        
        
        
A mutation is a change in a gene
        
             
        
        
        
Some adapt by limiting there outdoor activities to warmer parts of the day, they wear thicker clothing , stay in there houses and use fires to stay warm