Answer:
I would say c because, sure the polar bears can swim and other things there will be very little ice once the ecosystem melts. 
Explanation:
common sence 
 
        
             
        
        
        
alleles of different genes tend to be connected together when does genes are on the same chromosome the Offspring received one recessive allele from each parents
Hope it helps 
 
        
             
        
        
        
Answer:
Heart failure can rob your liver of the blood it needs to work. The fluid buildup that comes with it puts extra pressure on the portal vein, which brings blood to your liver. This can scar the organ to the point where it doesn't work as well as it should.
i hopes this helps
 
        
             
        
        
        
An identical twin I think