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The top documents tagged [gaspermeable skin]
From Slime to Scales: Evolution of Reptiles. Review: Disadvantages of Being an Amphibian Gelatinous eggs of amphibians cannot survive out of water, so
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Respiration
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CHAPTER 32 PAGES Respiration. Why Exchange Gases? The act of breathing is called respiration Cellular respiration converts the energy in nutrients into
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