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Alveoli is an air passage
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A frog certainly can trap air in their throat. This is a necessary skill that the frog has developed as a creature that lives both in and out of water.
An intake air duct serves as a passage for supplying air to an engine, and includes a first intake air passage, a second intake air passage, an opening-and-closing valve, an interlocking member and a coiled spring. The opening-and-closing valve is disposed swingably in the second intake air passage so as to open and close the second intake air passage
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sequence of events
The Oropharynx is the common passage for food and air. Liquid, food, and air all pass through this passage.
trace the passage of sperm cell from the testes
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Frog and Earth
pharynx
no your frog will thrive in a low oxygen environment. since it does breathe air.