The vitamin D hypothesis a. helps explain why dark skinned ...

[arivle123]

The vitamin D hypothesis
 
  a. helps explain why dark skinned populations are found near the equator.
  b. has never been challenged.
  c. cannot explain why light skin may be adaptive in low UV environments.
  d. remains the primary hypothesis explaining why skin color lightened as populations moved out of Africa.
  e. Helped Pasteur to discover the process of homogenization

Question 2

The folate hypothesis
 
  a. contradicts the importance of the relationship between UV radiation and skin cancer.
  b. purports to explain why dark skin is advantageous in high UV environments.
  c. CANNOT explain why dark skin is advantageous in high UV environments.
  d. explains why dark-skinned individuals often have rickets.
  e. Explains why leaves fall in autumn.

[josephsuarez]

Answer to Question 1

D

Answer to Question 2

B

[arivle123]

Excellent

[daiying98]

Thanks for the timely response, appreciate it