Acountry does not need a clearly defined
a. government
b. territory
c. language

What causes the cyclical changes in the appearance of the moon?

In plate tectonics, why is the north american plate tectonically inactive?

Which of the following is an important principle of how water moves through a watershed? a. most freshwater is in the form of ice. b. small streams flow into larger streams. c. each watershed contains only a single source of water. d. clouds are formed through evaporation and then condensation.