本题目来源于试卷: SL/HL Topic D3.3 Homeostasis，类别为 IB生物学
[问答题]
V. Suggest two reasons why la fwidn,jc8yd3-** u bodihoran; i: +ui:7qa.dy temperature is lower in the hours of rest and slen::7. drui; iqoah +iaep.
参考答案: Lower rate of respiration at night.
Less muscle activity producing metabolic heat.
Circadian rhythm lowering body temperature/ Set point for temperature is lower during sleep. Thyroxine (Hormone) levels lower at night giving a lower temperature/release of melatonin.
本题详细解析:
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