Examlex
Where is the uncertainty in the number 101.2°C?
Spiracles
Small openings on the surface of some animals, such as insects, that allow air to enter and exit the respiratory system.
Tracheal Tubes
Tracheal tubes are part of the respiratory system of certain invertebrates, including insects, providing direct exchange of air through the body.
Countercurrent Exchange
Exchange of substances between two fluids moving in opposite directions.
Gill Capillaries
Small blood vessels within the gills of fish that facilitate the exchange of oxygen and carbon dioxide with water.
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