Comments by "Matt Matt" (@CENTRIX4) on "What is the Origin u0026 Reason for Blue Eyes?" video.

  1. Dense cloud cover reduces ambient Ultra Violet levels at ground level add to this what you have posted the dense forests further reducing ambient Ultra Violet levels at ground level. The two combined can explain how blue eyes with a sensitivity to Ultra Violet thus enhanced vision with low ambient Ultra Violet at ground levels renders blue eyes a biological adaption that confers a survival advantage in pre-history before settled farming arrived in Europe.
    25