Exercise, smoking and asthma are all factors that can affect the gas exchange system. VOICEOVER: How we breathe. Breathing - or ventilation - is the process of taking air into and out of the lungs.

In these cruciferous plants—including cabbage, mustard, and wasabi—genes originally used for gas exchange have been repurposed for defense. The researchers uncovered the unique mechanism ...

Exercise, smoking and asthma are all factors that can affect the gas exchange system. VOICEOVER: How we breathe. Breathing - or ventilation - is the process of taking air into and out of the lungs.