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Why do mammals require more expensive respiratory surface ​

User Geovanni
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Answer:

Because we need it to convert food into body heat

Step-by-step explanation:

Mammals require an extensive respiratory surface because we have high energy requirements.Unlike fishes, reptiles and amphibians, we are warm blooded and maintain a constant body temperature, and this does take energy.Compared to reptiles we use more oxygen because we need it to convert food into body heat

User Xiatica
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