Integumentary system I believe
        
                    
             
        
        
        
Answer:
All of the above is correct
Explanation:
 
        
                    
             
        
        
        
Answer:
C. glucose
Explanation:
Dark reaction takes place outside the thalakoid membrane (stroma and cytoplasm). During dark reactions, energy is released from ATP and NADPH to fix carbon dioxide into <em><u>glucose</u></em>. 
Option A and B are not correct because they are produced during light reactions. Likewise, chlorophyll is the part of cell and is not prepared during light or dark reactions at all.
 
        
             
        
        
        
As fas as i remember 20% of whole cell is RBC
so the answer is 2×10^13 !!
        
             
        
        
        
7. Succession, 6. Extinction, 5. Niche, 3. Ecosystem, 2. Population, 1. Habitat, 4. Environment, 8. Community