diffusion

• Letter: B

  
• Letter: A

  
• Letter: C

  
• Letter: D

  
• upwards

  
• more concentrated areas to less concentrated areas

  
• diffusion happens naturally
• Letter: D

  
• Letter: B

  
• Letter: C

  
• Letter: A

  
• Letter: A

  
• diffusion happens due to the random movement of individual particles
• When there is a shorter distance the rate of diffusion will increase
• When there is a greater concentration difference, the rate of diffusion will increase
• When there is a greater surface area, the rate of diffusion will increase
• diffusion increases there is: an increase in surface area, increase is concentration difference, and a decrease in distance