I think the answer is C) R I had this question and that was right for me hope this helps!
        
             
        
        
        
Answer:
four oxygen molecules
Explanation:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
 
        
             
        
        
        
Answer:
1) Natural fibers come from many sources. These sources can include plants, animals, and minerals. We are probably most familiar with plant and animal fibers from a consumer standpoint. Common natural fibers sourced from the plant kingdom include cotton, flax, hemp, bamboo, sisal, and jute
2) Benefits of a high-fiber diet
Normalizes bowel movements. Dietary fiber increases the weight and size of your stool and softens it. ... 
Helps maintain bowel health. ... 
Lowers cholesterol levels. ... 
Helps control blood sugar levels. ... 
Aids in achieving healthy weight. ... 
Helps you live longer.
 
        
                    
             
        
        
        
Answer:
okay buddy, have fun with that.
Explanation:
 thanks