Question

question 5 1 pts what happens in the process of diffusion. substances move from areas where they are in low concentrations to areas where they are in high concentrations. substances move from areas where they are in high concentration to areas where they are in low concentrations.

Explanation:

Diffusion is the passive movement of particles (like molecules, ions) from a region of higher concentration to a region of lower concentration, driven by the natural tendency to equalize concentration (due to random thermal motion). The first option describes movement against concentration gradient (which is active transport, not diffusion). The second option matches the definition of diffusion.

Answer:

B. Substances move from areas where they are in high concentration to areas where they are in low concentrations.