B. Forma y función

Las adaptaciones son formas que responden a la función. Estas adaptaciones persisten de generación en generación para aumentar las probabilidades de supervivencia. 

B3.1 Intercambio de gases
B3.1 Intercambio de gases
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B3.2 Transporte
B3.2 Transporte
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B3.3 Músculo y motilidad
B3.3 Músculo y motilidad
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