One big difference between osmosis and diffusion is that both solvent and solute particles are free to move indiffusion, but when we talk aboutosmosis, only the solvent molecules (water molecules) cross the membrane. ... When people discussosmosis in biology, it always refers to the movement of waters
        
             
        
        
        
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complete your answer first
 
        
             
        
        
        
Anatomical structure, possible diet, and reproduction evidence.
        
             
        
        
        
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They are propogated down the length of the dendrite