What is the occasion in which diffusion does not take place?
a) Transportation of oxygen from leaves to the atmosphere.
b) Transportation of water vapour from atmosphere to the leaf.
c) Transportation of water from soil to root hair.
d) Transportation of carbon dioxide from atmosphere to the leaf........
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The diffusion of chemicals and gases in and out of cells is an essential activity in human organs. Diffusion of oxygen and carbon dioxide gas occurs in the lungs. Diffusion of water, salts, and waste products occurs in the kidneys. Diffusion of calcium from food into cells occurs in the intestines
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