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Minchanka [31]
3 years ago
10

Help please!!!!!!!!!

Biology
1 answer:
Anestetic [448]3 years ago
4 0

Answer:

B

Explanation:

Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient.

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