Common Issues Across Places and Times — Unit test Answers

The first genetically modified food was the tomato, which was modified to __________. A. ripen without softening B. be more juicy and flavorful C. have a reduced growing season D. have increased resistance to drosophila Please select the best answer from the choices provided.

Read the excerpt below and answer the question that follows.Dr Snow took a sample of water from the pump, and, on examining it under a microscope, found that it contained "white, flocculent particles." By 7 September, he was convinced that these were the source of infection, and he took his findings to the Board of Guardians of St James's Parish, in whose parish the pump fell.Though they were reluctant to believe him, they agreed to remove the pump handle as an experiment. When they did so, the spread of cholera dramatically stopped . . . At the end of September the outbreak was all but over, with the death toll standing at 616 . . .“Broad Street Pump Outbreak.” UCLA Department of Epidemiology. University of California, Los Angeles, School of Public Health. Web. 22 Jun. 2011. http://www.ph.ucla.edu/epi/snow/broadstreetpump.html.

Which types of crops almost always are exported, and are rarely consumed by the nation that produces them? A. cash crops B. subsistence crops C. luxury crops D. high-volume crops Please select the best answer from the choices provided.

In making connections between past and present events, which of the following steps should come before comparing and contrasting the details? A.making connectionsB.gathering supporting evidenceC.drawing conclusionsD.writing up the results

Which of the following statements best explains why farmers in Mediterranean climates have an advantage? A. This region receive the best rainfall and climate for farming. B. Europe is one of the world’s most important markets. C. Farmers can increase their profits because they work on larger farms. D. Many crops that grow well in this region are high-value crops. Please select the best answer from the choices provided.

Deforestation is especially problematic in which of the following regions? A. Western Europe B. Australia C. tropical rainforests D. North America Please select the best answer from the choices provided.

Which of the following aspects of agricultural cultivation increases the risk of erosion? A. replacing natural vegetation with cultivated crops B. utilizing no-till planting methods C. plowing in curved, rather than straight, lines D. leaving plants in the ground during the winter Please select the best answer from the choices provided.

The dramatic population explosion that occurred in Europe and around the world in the 1600s is most attributed to the __________. A. introduction of high-calorie crops from the Americas B. invention of the steel plow C. utilization of animals in the fields for labor D. development of agriculture Please select the best answer from the choices provided.

Which agricultural innovation increased production in the 1700s? A. cash crops B. four-crop rotations C. plantations D. hybrids Please select the best answer from the choices provided.

The production of bioengineered foods increased rapidly between 2000 and 2005, but declined for the next five years.Please select the best answer from the choices provided.

Human activity accelerates erosion to 10 to 15 times its natural rate. What are some practices that humans can adopt to slow down erosion?