________ is found at four major sites in South Africa dating to between 2 and 1.5 million years ago.
A. Paranthropus boisei
B. Paranthropus aethiopicus
C. Paranthropus robustus
D. Australopithecus garhi
Answer: C
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__________ training is associated with foraging societies such as the Ju/’hoansi.?
Fill in the blank(s) with the appropriate word(s).
There are clear differences in social, political, and economic organization between societies that had writing and those that did not
Indicate whether the statement is true or false.
The greenhouse effect is a natural phenomenon that keeps the earth's surface warm. Without greenhouse gases-water vapor, carbon dioxide, methane, nitrous oxide, halocarbons, and ozone-life as we know it wouldn't exist. The current problem is that
A. the atmospheric concentration of greenhouse gases has reached its highest level in 400,000 years and will continue to rise, as will global temperatures, without actions to slow it down. B. most scientists dispute the anthropogenic reasoning for high concentrations of greenhouse gases. C. it is difficult to distinguish between climate change and global warming. D. scientists cannot agree on a general model of how the greenhouse effect went from being a positive to a negative and a life-threatening force. E. global warming actually benefits 90 percent of the world's population, so it is difficult to mobilize the will to address the anthropogenic causes of climate change.
What is the difference between sex and gender? a. Sex is the accumulation of all biological differences between individuals
b. Sex is the combination of cultural meanings assigned to the biological differentiation between the genders. c. Gender is the combination of cultural meaning assigned to the biological differentiation between the sexes. d. There is no difference between these concepts.