The world's population had reached 2.0 billion by about the year:
A) 1850
B) 1930
C) 1990
D) 2010
B
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Which one of the following best illustrates a type of mitigation in response to global climate change?
A) Using natural gas instead of coal to generate electricity B) Constructing and using wind turbines to generate electricity C) Using scrubbers to remove sulfur from coal before burning it to generate electricity D) Using coal-generated electricity to power electric cars
What type of evidence was used in the Investigation to locate where the earthquake occurred?
A. seismograms from three stations B. newspaper accounts of where buildings were destroyed C. newspaper accounts recording eyewitness observations D. photographs showing the amount of damage in different places E. All of these choices are correct.
A sea breeze is most likely to develop along a coastline when
a. pressure gradients between the land and sea are large. b. pressure gradients between the land and sea are small. c. ?it is raining. d. ?it is foggy. e. ?surface temperatures are high.??
After the year 1600, the human population began to grow more rapidly, owing to which of the following factors?
A. Increases in commerce and communication on a global scale, new agricultural developments, and better health care and improved hygiene B. Increases in commerce and communication on a global scale and new agricultural developments C. Better health care and improved hygiene D. Increases in commerce and communication on a global scale E. New agricultural developments