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And here's another interesting question. Why does your skin sometimes become darker after spending time outdoors? When your skin receives ultraviolet radiation, it can respond by increasing melanin production. This process is called tanning. However, tanning is also a sign that your skin has responded to UV exposure, and it does not mean your skin is completely protected. People of every skin tone can experience sun damage, so appropriate sun protection is important for everyone. Now, consider this amazing fact. Human skin color varies gradually across populations, rather than falling into a few fixed biological categories. Although people may look different on the outside, we all belong to the same species, Homo sapiens, and share the vast majority of our DNA. Skin color does not determine intelligence, ability, personality, or human worth. It's one visible example of how genetics, environment, and human evolutionary history interact. So the next time you see the beautiful diversity of human skin colors, remember the extraordinary science behind it. Different shades, shared humanity, and one fascinating evolutionary story. Keep exploring, keep questioning, and keep learning with Questivra Educational World!