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sweet [91]
4 years ago
11

1

Biology
1 answer:
ivann1987 [24]4 years ago
8 0

Answer:

# Diffusion is a down hill process.(flow is from higher concentration to lower concentration)

# It does not require energy.

but,

# Active transport is a uphill process.(flow is from lower concentration to higher concentration)

# It requires energy.

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