Why is caving fun and what dangers are involved?

Listed following are several astronomical objects. Rank these objects based on their diameter, from largest to smallest.

What did the discovery of oil in the middle east allow those countries to do?

What means population per area such as number of people per square mile in a state

Which of the following is not an example of how Europeans have made important uses of their water supply?

In which location in southeast asia are you most likely to find volcanic and seismic activity?

The principle of uniformitarianism states that geologic processes that happened in the past cannot predict or explain why current geologic processes happen. True False

Dams are often built to generate power. One negative impact of damming a river is reduced flow downstream water storage to battle a drought increased recreation opportunities flood control

What three cities form the global centers of economic activity?

Describe and explain the physical and/or chemical methods used to refine the coal

Explain the characteristics of authoritarianism, and identify two Central Asian countries that have this type of government