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12 questions from this quiz
It is slow and inefficient over long distances
Volume increases more rapidly than surface area
Lungs, gills, and intestines
Alveoli in lungs and villi in intestines
They reduce the distance for diffusion
Transports substances quickly to/from cells
They maintain concentration gradients
From alveoli into blood
From blood into alveoli
Increase surface area for nutrient diffusion
Urea
Oxygen, nutrients, and waste products
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