
Concept explainers
To explain: The conditions under which it might be an advantageous for a fish to have lungs as well as gills.
Introduction: The process of gas exchange occurs between an organism and its environment is known as respiration. For
To determine: The function that lungs of modern fishes serve.
Introduction: The process of gas exchange occurs between an organism and its environment is known as respiration. For cellular respiration, most of the animal cells need a continuous oxygen supply. During respiration, oxygen is inhaled from the environment by animal and transport to individual cells of the body. As well as, carbon dioxide produced by the cell during cellular respiration is exhaled from the body to the atmosphere.

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Chapter 46 Solutions
EBK BIOLOGY
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