Answer:
A
Explanation:
You have to repeat it to see which result you see more of, because that would most likely be the correct solution.
 
        
                    
             
        
        
        
Answer:
All
Explanation:
You would need carbon dioxide to be able to sustain life forms such as plants, warm enough temperatures to allow the development of animals, (because they cannot be frozen), they would, of course, need oxygen to allow anyone to breathe, and finally liquid water to sustain healthy life, because we must hydrate that is necessary for survival. 
 
        
             
        
        
        
Traditionally, the term caviar refers only to roe from wild sturgeon in the Caspian Sea and Black Sea (Beluga, Ossetra and Sevruga caviars). Depending on the country, caviar may also be used to describe the roe of other fish such as salmon, steelhead, trout, lumpfish, whitefish, carp, and other species of sturgeon.
        
             
        
        
        
Answer: Effector cytotoxic T cells
Explanation:
Cells infected with a virus or another internal cellular infection are immediately killed by effector cytotoxic T cells.