Why Don't Penguins' Feet Freeze?

Mick O'Hare · Profile Books

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Izdavač	Profile Books
Godina	2006
Mjesto izdanja	London
Broj stranica	236
Format	13x20
Jezik	hr
Uvez	meki
Stanje knjige	Vrlo dobro
Šifra	100064

Opis

Why don't penguins feet freeze? Well it turns out they can control the blood flow to their feet and they also have a system of blood vessels that reduces heat loss from their bodies. These both help them to keep their feet a few degrees above freezing. This also stops them sticking to the ice.