A Complete Collection of 100000 Whys
Fav十万个为什么
为什么企鹅的羽毛防水但不会冻结？
简单的摘要：企鹅的羽毛防水但不会冻结，主要是由于其特殊的羽毛结构、油脂分泌的保护作用以及羽毛间的空气层隔绝寒冷。
1、特殊的羽毛结构：企鹅的羽毛分为两层，外层防水且紧密排列，内层为绒毛状，能够形成空气层隔绝寒冷，同时防止水分渗透。
2、油脂分泌的保护作用：企鹅通过油腺分泌油脂，定期涂抹在羽毛上，增加防水性能，同时减少水分附着，防止羽毛冻结。
3、羽毛间的空气层隔绝寒冷：羽毛之间的空气层不仅隔绝了寒冷空气，还减少了热量的散失，使企鹅能够在极寒环境中保持体温。
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