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29. When a substance is moved from an area of low concentration to an area of high concentration, a energy is needed. b. cells begin to rupture. C. diffusion has occurred. d. mitochondria aren't needed.
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29. When a substance is moved from an area of low concentration to an area of high concentration,

a energy is needed.
b. cells begin to rupture.
C. diffusion has occurred.
d. mitochondria aren't needed.

User Chris Cinelli
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1 Answer

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The answer is

A = energy is needed
User Brettins
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