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Diffusion is the net movement of molecules from an area of ________ high/low to concentration to an area of ___________low/high concentration.

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Final answer:

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, along the concentration gradient, until equilibrium is reached.

Step-by-step explanation:

Diffusion is the net movement of molecules from an area of high concentration to an area of low concentration. This process is a passive transport mechanism, meaning it does not require energy to occur. During diffusion, molecules move down their concentration gradient until the concentration is equal across a space. For example, when someone opens a bottle of ammonia in a room, the ammonia vapor, which is at a high concentration inside the bottle, will spread out to the parts of the room where the concentration of ammonia is lower. This process will continue until there is an equal concentration of ammonia throughout the entire room.

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