... gases. 70 99_book.fm Page 41 Friday, July 14, 2006 3:13 PM© 20 07 by Taylor & Francis Group, LLC 32 Principles of Air Quality Management, Second Edition The filtering construction of the ... CO2 and H2O. It is through these 70 99_book.fm Page 37 Friday, July 14, 2006 3:13 PM© 20 07 by Taylor & Francis Group, LLC 42 Principles of Air Quality Management, Second EditionBecause ... age) 20Athletic activities 7 Total 52.5 70 99_book.fm Page 22 Friday, July 14, 2006 3:13 PM© 20 07 by Taylor & Francis Group, LLC 38 Principles of Air Quality Management, Second Editionstomata...