Which of the following factor can affect the rate of diffusion of gases `?`

Which of the following factor can affect the rate of diffusion of gases `?`
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Which of the following factor can affect the rate of diffusion of gases `?` A. Thickness of the ... . Pressure of the gases D. All fo the these
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What are the factors affecting the rate of diffusion? -Biology

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Here is an interesting question. Which might be the major factor responsible for the rise in carbon dioxide ("greenhouse gases") in our atmosphere?? (There is not likely to be much consensus as to the 'correct' answer. Think critically and objectively about this issue.)

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