The great lakes were formed by:

a. continental glaciers.

b. earthquakes.

c. erosion by rivers.

d. underground hot springs.

Which of the following is not a reason why fires were a major hazard for early cities? A. Buildings were overcrowded and built close together. B. Structures were built with flammable materials, including wooden or thatched roofs. C.

The Las Vegas valley is ringed by mountains. When it rains in the mountains flash floods carry tons of clastic sediment down narrow slot canyons, and then deposit the sediment on alluvial fans at the mouth of the canyon.

What is unusual about the borders of angola?

What caused the huge change in population around the 1800s? Explain why this event caused a huge population increase.

How and why are the Sherpas more able to endure the extremes of the environment, unlike most other people?

What happens if the earth consist of pure oxygen

Which of the following is the most protected crop of Japan

1. What is the primary environmental cost of Southeast Asia's dominance in exports of rubber and palm oil?

France's busiest seaport is located on the

Is there anything particularly special about the feature or the area in the San Andreas Fault?