It is an organic catalyst. It speeds up certain chemical reactions in the body.
        
                    
             
        
        
        
Answer:
B)
Explanation:
Natural selection describes how organisms change, and adaptation explains why. Charles Darwin, theory.
 
        
                    
             
        
        
        
Answer:
Jimmy's blood type: "O" Blood
Jimmy can receive blood from: O blood type only. 
Explanation:
The anti-A antibodies are present in the plasma of "B" blood type. Similarly, the blood type "A" has anti-B antibodies in its plasma. Since Jimmy's blood is showing agglutination with both "A" and "B" blood type, he has "O" blood type.
The "O" blood type has both anti-A and anti-B antibodies in its plasma and exhibits agglutination with both A and B blood type. The "A" antigen of "A" blood type reacts with anti A antibodies of jimmy's blood while "B" antigen of "B" blood type would exhibit agglutination with "anti B antibodies" of Jimmy's blood. He can get blood from "O" blood type only as he has both anti-A and anti B antibodies in his blood plasma.
 
        
             
        
        
        
I believe it’s A. Not sure though
        
                    
             
        
        
        
Answer:They sleep to get rest and when they’re tired. If they do not sleep enough they will not be active in the morning 
Explanation:
Hope that helps :D