By the age of 3, Efe children have been found to spend an average of __________ of their time a day in social contact with people who are not their mothers
a. 10 percent
b. 50 percent
c. 70 percent
d. 90 percent
Answer: c
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The Kofyar farmers of Nigeria failed in commercial agriculture because they had no government assistance
Indicate whether the statement is true or false
All of the following are changes that China has faced recently due to global and domestic economic changes:
a. Increasing middle class. b. Increasing gap between opportunities and services in rural and urban areas. c. Increasing income disparity. d. Decreasing amounts of competition. e. Increasing vulnerability of factory workers.
The "smoke-detector principle" as discussed in the text is:
A. the fact that people tend to get violent (like a smoke detector going off) when they are frustrated B. a defense mechanism that is so fine-tuned that even an insignificant stimulus might trigger it C. the fact that we are more and more dependent on technology D. none of these
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A. are always considered to be correct statements B. are the same thing as laws in science C. are not a necessary part of the scientific method D. must be logical and testable