What kind of air would be characteristic of a continental polar air mass? A. Warm, humid
B. Cold, dry
C. Warm, dry
D. Cold, wet

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.

High human population have had a negative effect on what issue? a. demand for consumer goods b. ability to staff armies c. business profits d. biodiversity

What empire controlled most of the middle east except for a few years between 1516 and 1917, where was the capital of this empire located and what was the geographic extent of this empire?