Which statements concern pandemics? Choose all that apply.

a. confined to a specific geographic area

b. easily spread to new areas

c. highly contagious disease

d. the bubonic plague

e. the common cold

Though most volcanoes are mountains, most mountains are not volcanoes, why or why not?

What people group is NOT migrating to Western Europe in modern times? A. Refugees B. Eastern Europeans C. Americans D. All of the above

A carpenter has a wooden dowel that is 72 cm long. She wants to cut it into two pieces so that one piece is 3 times as long as the other. What are the lengths of the two pieces?

Groups in the Amazon rainforest?

Two of the main economic activities in the guianas are ___. 1. ranching & tourism 2. natural gas export & manufacturing 3. oil production & tourism 4. fishing & farming

Which resources are important to the economies of many countries in Siberian Russia, Central Asia, and the Caucasus region? A. oil B. timber C. diamonds D. coal

In a short paragraph, explain the various waves of immigration to the United States. What groups were part of each of these waves?

What is a fault? A. the name for two opposing forces B. a type of crust that moves under heavier crust C. a crack in Earth's crust where movement occurs D. a volcanic region where new material is being created

How many plug-in hybrids does Obama want to see on the road in the next 6 years? 100,000 500,000 1 million 2 million

What is the difference between weathering and erosion?