Answer: Genetic Drift
Explanation:
It's all based on sampling errors.
 
        
             
        
        
        
Nerve cells is the correct answer :)
        
                    
             
        
        
        
Diffusion occurs because of the movement of molecules from the region of higher concentration to the region of lower concentration. This movement of molecules occurs due to a thermal motion. Diffusion normally occurs between two compartments having difference in concentration. In case of fluid it moves from the region of higher concentration to the region of concentration until a balance is reached. The process of diffusion is very important for the humans as well. The oxygen that humans breathe in gets diffused with the blood.<span> 
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Answer:
D. decrease the amount of erosion along the hillside
Explanation:
When logging operations are conducted on a hillside near a river, the operations will decrease the amount of erosion along the hillside because the tree's root hold soil particles and does not allow them to erosion. We can see in many region that there is presence of vegetation on the bank of river or stream in order to prevent erosion of soil so that's why we can say that logging operations causes decrease erosion along hillside. 
 
        
             
        
        
        
Answer:
blood because that is a part of your body bacteria