Biology Class 9

What is diffusion and why is it important for cells?

How do gases move in and out without energy?

uniboardhub
Asked on 06/02/2026 104 views
1 answers 50 votes

1 Answers

uniboardhub
2 weeks ago

Diffusion is the movement of substances from higher to lower concentration. Oxygen and carbon dioxide move in and out of cells through diffusion, allowing respiration without energy use.

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