2. Which of the following effects of vog on humans is NOT mentioned in the passage?

A. irritated eyes

B. throwing up

C. coughing

D. sore throats

When investors purchase a commodity, they believe

Which of the following locations has the highest population density? A. Yucatán peninsula B. Mexico City C. Mexico D. Belize

The Americas started using Africa slaves, because the native Americans?

How can astronomers "weigh" the supermassive black hole at the center of the Milky Way? a. by measuring the velocity and orbital radius of stars and other matter orbiting it b. by how much mass it sucks in during a given period c.

What is the largest and most important river system in south america? a. the amazonb. the orinococ. the rio granded. the rio de la plata

1. Discuss the influence of World War I and its aftermath on the arts. Explain what events or experiences inspired artists of all kinds to experiment with new approaches.

Geographers divide Earth into what groups

Canada includes 3 territories and 10

What sources of data are used by demographers?

Two towns have about the same latitude and elevation. One town is on the coast and the other is far inland. How would the summer weather of the inland town most likely be different from the weather in the coastal town?