Why is lighter skin needed in areas closer to the north and south poles where UV rays are weaker? A. Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin B. B. Lighter skin is not necessary in the north and south poles. C. Individuals with a lot of melanin would get too much UV ray penetration in their skin and they wouldn't be able to synthesize vitamin D. D. Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin D.
Why is lighter skin needed in areas closer to the north and south poles where UV rays are weaker? A. Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin B. B. Lighter skin is not necessary in the north and south poles. C. Individuals with a lot of melanin would get too much UV ray penetration in their skin and they wouldn't be able to synthesize vitamin D. D. Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin D.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
Why is lighter skin needed in areas closer to the north and south poles where UV rays are weaker?
| A. |
Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin B. |
|
| B. |
Lighter skin is not necessary in the north and south poles. |
|
| C. |
Individuals with a lot of melanin would get too much UV ray penetration in their skin and they wouldn't be able to synthesize vitamin D. |
|
| D. |
Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin D. |
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