I saw someone with that hold ok lemme try to find it
        
             
        
        
        
Explanation:
If the concentration of molecules outside the cell is very high relative to the internal cell concentration, the rate of diffusion will also be high. If the internal and external concentrations are similar (low concentration gradient) the rate of diffusion will be low.
 
        
             
        
        
        
Producers. Without them there would be no food chain