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Production possibilities frontiers cannot be used to illustrate trade-offs.
Epithelial
Relating to the epithelium, a layer of cells covering the body surfaces, lining cavities and organs, and forming glands, with roles in protection, secretion, and absorption.
Semipermeable Membrane
A type of membrane that allows certain molecules or ions to pass through it by diffusion and often by facilitated diffusion.
Osmosis
The process of fluid passing through a semi-permeable membrane from a less concentrated solution to a more concentrated one, to equalize the concentrations on both sides of the membrane.
Clotting Factors
Proteins in the blood plasma which work together to stop bleeding by forming clots.
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