For Europeans, what was the disadvantage of using so many different currencies in such a small area?

What rocks were formed from the cascade volcanoes

Select all of the answers that apply. What are the possible causes of the Late Devonian extinction? a. asteroid hitting the earth b. sea level changes c. overpopulation of sea organisms d. growth of land forests e. climate changes

19. (1) What is the engine that drives plate movement? a. The convective circulation in the upper mantle b. The Earth's rotation C. Solar gravitational pull on the Earth d. Terrestrial orbital aberrations

Describe the process of expansion

Where is 90 percent of Earth's ice found? O A. North Pole O B. Arctic Circle O C. Antarctica D. Siberia

Which is a type of chemical weathering?

How to draw a model for 5.5 divided by 5

Which area of the United States and Canada suffer most from acid rain, deforestation, chemical or nuclear toxic waste, and flooding?

The leading country for illegal drug production in Latin America is

Why is no land created or destroyed at transfrom boundaries