Part I – Skin Cancer
1. The causes of skin cancer (aka non-melanoma) is the exposure to the sun. Moles are another cause of skin cancer too. For example, people who live in higher altitude or live in areas with bright-sunlight year-round have a higher risk of developing skin cancer. Also, previous skin cancer, history of sunburns or fragile skin, as well as radiation therapy are other causes of skin cancer.
2. Caucasians are more at risk of skin cancer than other populations because Caucasians have less melanocytes in their skin. To determine the amount of melanocytes, one should look back at where he or she’s ancestors are from. Usually, ones ancestors with white skin live farther from the equator; meanwhile, one’s ancestors with …show more content…
I think the more darkly pigmented people would be found in Northern South America because that’s where the equator is. Since that is where the equator is, there is more harmful UV light. Also, the sun is overhead the equator. I think you will find the more lightly pigmented people in the North Pole because the sun is at a rather slant angle at the Poles and is not giving enough sunlight UV rays, which is less harmful to the people.
Part III – Distribution of Skin Tones across the Globe
8. A. No, skin reflectance is not randomly distributed throughout the globe. People with a lower skin reflectance have darker tones while people with higher skin reflectance have lighter tones. The pattern is that people who live closer to the equator (-40 or -30 latitude) have darker tones.
B. The more UV light that skin is obtaining, the darker the skin tone, while the less UV light that the skin is obtaining, the lighter the skin tone.
C. These findings closely match the predictions of my hypothesis because these findings give statistical information on how people with lighter tones live farther away from the equator and people with darker tones live closer to the equator. For example, the latitude (-20 degrees (Africa)) is a region where people with darker pigmentation
1. The causes of skin cancer (aka non-melanoma) is the exposure to the sun. Moles are another cause of skin cancer too. For example, people who live in higher altitude or live in areas with bright-sunlight year-round have a higher risk of developing skin cancer. Also, previous skin cancer, history of sunburns or fragile skin, as well as radiation therapy are other causes of skin cancer.
2. Caucasians are more at risk of skin cancer than other populations because Caucasians have less melanocytes in their skin. To determine the amount of melanocytes, one should look back at where he or she’s ancestors are from. Usually, ones ancestors with white skin live farther from the equator; meanwhile, one’s ancestors with …show more content…
I think the more darkly pigmented people would be found in Northern South America because that’s where the equator is. Since that is where the equator is, there is more harmful UV light. Also, the sun is overhead the equator. I think you will find the more lightly pigmented people in the North Pole because the sun is at a rather slant angle at the Poles and is not giving enough sunlight UV rays, which is less harmful to the people.
Part III – Distribution of Skin Tones across the Globe
8. A. No, skin reflectance is not randomly distributed throughout the globe. People with a lower skin reflectance have darker tones while people with higher skin reflectance have lighter tones. The pattern is that people who live closer to the equator (-40 or -30 latitude) have darker tones.
B. The more UV light that skin is obtaining, the darker the skin tone, while the less UV light that the skin is obtaining, the lighter the skin tone.
C. These findings closely match the predictions of my hypothesis because these findings give statistical information on how people with lighter tones live farther away from the equator and people with darker tones live closer to the equator. For example, the latitude (-20 degrees (Africa)) is a region where people with darker pigmentation