| 1. | Breathing air is cleansed of deadly carbon dioxide in a three-step process.
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| 2. | Immersion is not necessary _ Keiko breathes air just as humans do.
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| 3. | This modified stomach may be for buoyancy control or for breathing air.
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| 4. | Ventilation was monitored in awake and anesthetized cats breathing air or CO2.
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| 5. | We have the right to breathe air that is 20 percent oxygen.
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| 6. | An example of this would be breathing air in an heliox environment.
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| 7. | It can breathe air . sperm are quite functional in low-oxygen conditions.
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| 8. | "Hypostomus " species are well known for the ability to breathe air.
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| 9. | Unlike almost all other snails that have opercula, this species breathes air.
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| 10. | The living siphonariids are all marine pulmonates, false sea limpets that breathe air.
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