Why are penguins never frozen?
Hồng Hạnh10:19:44 14/08/2021
Why is this bird's feathers never frozen? Antarctic penguins live in an extremely harsh environment where temperatures can drop to -40C and wind speeds can reach 140km/h. So why is this bird's feathers never frozen? Penguins, also known as winged penguins, are an order of...
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