A geographer is interested in studying how and why the environments of the Amazon Rainforest and the Andes Mountains are different. Which essential element of geography would the geographer use to complete this research? A. human systems
B. physical systems
C. places and regions
D. uses of geography

Although china’s total economic output, measured by gross domestic product (gdp), is third largest in the world, it is considered a developing nation. what is most likely the most important factor for this designation? a. china’s government spends money on things that do not benefit human development. b. china has a large population, so its gdp per person is only modest. c. china has a strong economy but weak literacy and school attendance rates. d. china’s high rates of disease offset the country's economic gains.