During the Day, Hummingbirds Maintain a High, Constant Body Temperature

question 81

Multiple Choice

During the day, hummingbirds maintain a high, constant body temperature, but at night they can lower their metabolism to save energy and allow their body temperatures to fall by as much as 20°C.Hummingbirds are therefore

• A) endotherms.
• B) ectotherms.
• C) heterotherms.
• D) pyrotherms.
• E) varitherms.

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