ab is the answer please give me brainleist answer
 
        
             
        
        
        
Answer:
B. Protein is composed of DNA which is produced in the cell
Explanation:
 
        
                    
             
        
        
        
Answer:
Atmosphere and geosphere is the part of the earth which is utilized in the nitrogen cycle. 
Explanation: 
In nitrogen cycle, the nitrogen which is present in the atmosphere comes down to the earth surface through rainfall. This nitrogen is absorbed by the earth and taken by roots of plants. Some amount of nitrogen is taken by many bacteria such as denitrifying bacteria which converts the soil nitrogen into atmospheric nitrogen and the nitrogen goes again to the atmosphere. 
 
        
             
        
        
        
The answer is ‘the only truly distinctive primate trait’. Prehensile hands are a distinctive trait of primates an opposable thumb (capable of grasping). The digits have  nails instead of claws, and tactile pads enriched with sensory nerve fibers at the ends of digits to feel to manipulate objects.
 
        
             
        
        
        
Answer:
Most humans cannot see ultraviolet light because it has a smaller wavelength than violet light, putting it outside of the visible spectrum.
