Examlex
All of the following were original North Atlantic Treaty Organization members EXCEPT:
Countercurrent Exchange
A mechanism in which fluids flow in opposite directions, exchanging properties (such as heat or chemical constituents) to maximize transfer rates.
Gills
Respiratory organs in certain aquatic organisms, allowing them to extract oxygen from water.
Gases
Substances that are in the state of matter characterized by having neither a defined volume nor shape, expanding to fill their container.
Terrestrial
Terrestrial refers to things relating to the Earth or living or growing on land as opposed to water or air.
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