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why do people have different color skin

Take a. Look at the
in your neighborhood. Look at the kids in your school. Take notice of the around your town, at the mall, in church, and at sporting events. What do you notice? One thing that many Wonder Friends have noticed is that come in all sorts of colors. Why is that? noticed long ago that from parts of the world often had colors. For example, who lived in the usually had darker than who lived in. Over time, scientists who studied the human body learned that variations in appeared to be adaptive traits that were passed through genes from parents to children. These traits corresponded closely with geography and the Sun's ultraviolet (UV) radiation. A person's is determined by the amount of in his or her. is a dark brown to black produced by special cells called melanocytes. 's purpose is to protect the from the. Ultraviolet radiation can cause. acts as a natural sunscreen by absorbing these UV rays. The more your has, the darker your will be and the more protection it will have against UV rays. with light have just a little. with darker have more. with yellow tones have more or another type of called. who live in the are exposed to more of the.


As a result, their tends to become darker as the body produces more to counteract the effects of the Sun's rays. Over successive generations, genes are passed down from parents to their children, including the tendency to produce a certain amount of given the area where they live. Likewise, tend to have lighter colors, because they don't receive as many of the Sun's harmful UV rays. As a result, their bodies do not need to produce as much, which makes their lighter. Also, lighter tones in northern areas allow more UV rays to penetrate the to help produce the essential amounts of that the body needs. The body must always strike a careful balance to make sure it receives just enough UV radiation to make essential vitamin D, while avoiding overexposure that can lead to. For example, in some northern areas, such as and Canada, you'll notice that native peoples tend to have darker than you might otherwise expect.


This is usually because they eat a diet rich in seafood that provides all the vitamin D their bodies need. As a result, their produces more, which makes it darker. Of course, in today's modern world of international travel, of all races, ethnicities, and nationalities travel and live all over the globe. Their individual bodies adapt to conditions where they live over time, and they pass on these traits to their children, which helps explain the tones we see all around us every day. Take a. Look at the in your neighborhood. Look at the kids in your school. Take notice of the around your town, at the mall, in church, and at sporting events. What do you notice? One thing that many Wonder Friends have noticed is that come in all sorts of colors. Why is that? noticed long ago that from parts of the world often had colors. For example, who lived in the usually had darker than who lived in. Over time, scientists who studied the human body learned that variations in appeared to be adaptive traits that were passed through genes from parents to children.


These traits corresponded closely with geography and the Sun's ultraviolet (UV) radiation. A person's is determined by the amount of in his or her. is a dark brown to black produced by special cells called melanocytes. 's purpose is to protect the from the. Ultraviolet radiation can cause. acts as a natural sunscreen by absorbing these UV rays. The more your has, the darker your will be and the more protection it will have against UV rays. with light have just a little. with darker have more. with yellow tones have more or another type of called. who live in the are exposed to more of the. As a result, their tends to become darker as the body produces more to counteract the effects of the Sun's rays. Over successive generations, genes are passed down from parents to their children, including the tendency to produce a certain amount of given the area where they live. Likewise, tend to have lighter colors, because they don't receive as many of the Sun's harmful UV rays.


As a result, their bodies do not need to produce as much, which makes their lighter. Also, lighter tones in northern areas allow more UV rays to penetrate the to help produce the essential amounts of that the body needs. The body must always strike a careful balance to make sure it receives just enough UV radiation to make essential vitamin D, while avoiding overexposure that can lead to. For example, in some northern areas, such as and Canada, you'll notice that native peoples tend to have darker than you might otherwise expect. This is usually because they eat a diet rich in seafood that provides all the vitamin D their bodies need. As a result, their produces more, which makes it darker. Of course, in today's modern world of international travel, of all races, ethnicities, and nationalities travel and live all over the globe. Their individual bodies adapt to conditions where they live over time, and they pass on these traits to their children, which helps explain the tones we see all around us every day.

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