Human Variation & Race
1. Solar radiation is part of our daily life. It is sunlight and we need some exposure from it to survive. High levels of exposure to solar radiation and it can greatly affect the human body. At first, it can cause minor damage to the skin in the form of sunburn damage. Over time, continuous high exposure can lead to skin cancer. Unfortunately, people who have or had cancer increase the likelihood of their offspring’s chances of developing cancer. 2. a. short-term: As solar radiation hits the skin, the skin quickly produces melanin to protect it. b. facultative: As the skin absorbed sunlight, it begins creating vitamin D. Vitamin D is useful for healthy bones, reducing risk of flu, cancer prevention, etc. c. developmental: The development of various skin color emerged due to the location humans were located. Those closer to the equator had darker skin and those furthest from it had lighter skin. d. Cultural: The u...