Which of the following is related to the evolution of skin pigmentation in human populations?
A. the amount of ultraviolet radiation and the need for vitamin D
B. the amount of carbohydrates versus proteins that are in the diet
C. the need for natural camouflage from predators
D. iron and zinc compounds in the soil
Answer: A
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In Mexico, it is very common for highly successful people to make career decisions based on _____
a. the needs of the extended family b. the needs of the nuclear family c. the needs of society as a whole d. self-interest e. salary
A reliance on plant foods is the ecological niche of H. erectus that separated them from H. habilis.
Answer the following statement true (T) or false (F)
All of the following can affect a firm's total revenue except which one?
A) rebates B) opportunity costs C) returns D) discounts
Farms and businesses tend to be unfriendly to the environment because the market economy punishes environmental responsibility
a. True b. False