The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a flood of sugar, and this may have evolutionary benefits
Več na: https://www.newscientist.com/article/2512692-bird-retinas-work-without-oxygen-and-now-scientists-know-how/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
nazaj
