The Inner Bird: Anatomy and Evolution

Format: Paperback

Language: English

Format: PDF / Kindle / ePub

Size: 5.93 MB

Downloadable formats: PDF

In God's plan this process of becoming involves the appearance of certain beings and the disappearance of others, the existence of the more perfect alongside the less perfect, both constructive and destructive forces of nature. By 1885, millions of bison had been reduced to just 500 (Jones, n.d.). These advantages include (a) pneumatization originating from air sacs greatly lightened the dorsal axial skeleton of the trunk without compromising its strength ( Wedel, 2005 ). (b) The continuous-flow, cross-current lung would have increased oxygen uptake twofold per unit air breathed compared to the ventilated pool model of the mammalian lung ( Fedde, 1990 ).

Pages: 464

Publisher: UBC Press (April 22, 2008)

ISBN: 077481344X

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