Isbjørnens sorte hud

Isbjørnen er et rovdyr i Arktis. Den er perfekt tilpasset det kolde klima i denne del af verden. En af disse tilpasningerne er sort hud, som er dækket med to tykke lag pels. Takket være sin mørke farve absorberer den mere sollys, som opvarmer dyrets krop.

Pelsen selv består av gennemsigtigt, hult hår – det reflekterer meget godt det hvide sollys som så giver illusionen af en lys farve.

Mandlig isbjørn, Hornsund, Spitsbergen (Author: Piotr Andryszczak)

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