Which type of agriculture is practiced by the largest percentage of the world's people?
A) hunting and gathering
B) shifting cultivation
C) pastoral nomadism
D) intensive subsistence
E) plantation
Answer: D
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Genetic resistance to antibiotics has
a. increased the spread of AIDS b. been a factor in the development of MRSA c. been favored by overuse of antibiotics d. two of these answers are correct e. all of these answers
What happens to the corrosive properties of an acid and a base after they neutralize each other? Why?
A) The corrosive properties are neutralized because the acid and base no longer exist. B) The corrosive properties are unaffected because salt is a corrosive agent. C) The corrosive properties are doubled because the acid and base are combined in the salt. D) The corrosive properties remain the same when the salt is mixed into water.
Which producer service is a firm most likely to externalize?
A) clerical support B) research C) insurance D) real estate E) legal services
Most of the region surrounding the North Pole is covered by ________
A) land B) permafrost C) ice pack D) ice floes E) tundra