Answer:
The model appears to show the carbon dioxide molecules entering the blood cell and the oxygen molecules existing the cell. 
 
        
                    
             
        
        
        
I believe it’s B sorry if it’s wrong
        
                    
             
        
        
        
primary production is the synthesis of organic compounds from atmospheric or aqueous carbon dioxide.
        
             
        
        
        
Answer:
 AA
Explanation:
Just like the ABO alleles, each biological parent donates one of their two alleles to their child. A mother who is Rh- can only pass an Rh- allele to her son or daughter. A father who is Rh+ could pass either an Rh+ or Rh- allele to his son or daughter. This couple could have Rh+ children (Rh- from mother and Rh+ from father) or Rh- children (Rh- from mother and Rh- from father).