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Explain the theory of comparative advantage using an example,and describe its assumptions and limitations.
Filtering Out Dust
The process of removing dust particles from air or liquids, typically using a physical barrier or filtration system.
Oxygen
A chemical element with the symbol O, essential for cellular respiration in most living organisms and a major component of Earth's atmosphere.
Capillary Walls
The thin, permeable barriers of capillary blood vessels that facilitate the exchange of water, oxygen, carbon dioxide, and other nutrients and wastes between blood and tissues.
Alveolar Walls
The thin tissue membranes in the lungs, forming alveoli that facilitate gas exchange between the air and blood.
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