Nature's First Line of Defence | Attenborough's Wonder of Eggs

By BBC universe 36 views 7 months ago

Eggs shells have to be hard enough to protect them from the outside world, but also soft enough for the chick to break free.

ЕС ПРИЕ ПЛАН ЗА ПРЕКРАТЯВАНЕ НА ЗАВИСИМОСТТА ОТ РУСИЯ И НЕЙНИЯ ГАЗ

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