For most women in the world today, what is the biggest risk factor for becoming infected with HIV?
A) age at first birth
B) ethnic group
C) being married
D) nutritional status
C) being married
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What is the term for the kind of cultural change that results when two or more cultures have consistent firsthand contact?
A. colonization B. imperialism C. enculturation D. acculturation E. independent invention
Which characteristics of A. sediba resemble Homo?
a. short fingers and brain reorganization b. omnivorous diet c. big brains d. reduced dentition e. long arms and short legs
The occurrence of new cases of a disease is calculated as the __________
a. prevalence rate b. crude death rate c. mortality rate d. incidence rate
According to comparative linguists Joseph Greenberg and Merritt Ruhlen, there were
three waves of migration into the New World. Indicate whether the statement is true or false