Evolution - The evolution of skin HD 🎥 c-QiIvRUh7bs8xPfV1 | Channify

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Evolution - The evolution of skin HD Skin is absolutely amazing, far more complex and versatile than we ever give it credit for. It makes up 16% of your body weight is the largest organ in the human body, allows birds to fly and mammals to nurse their young and provides a lifelong defense against predators and parasites alike.