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class10iis.files.wordpress.com · (1) In a animals with a targe body size, the diffusion pressure alone cannot take care ofthc transport of oxygen and carbon dioxide; so, they need

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Page 1: class10iis.files.wordpress.com · (1) In a animals with a targe body size, the diffusion pressure alone cannot take care ofthc transport of oxygen and carbon dioxide; so, they need