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When does the movement in and out of the cell not require energy
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When does the movement in and out of the cell not require energy

User Alex Kravchenko
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Answer:

Diffusion

Step-by-step explanation:

Diffusion only happens in liquids and gases because their particles move randomly. It is an important process for living things; it is how substances move in and out of cells. It happens naturally and so does not require energy.

User Haswin
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