[ 265 ] Geography and the World GED ® TEST SOCIAL STUDIES FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Fill in the blank with the correct term. Water ______________ wear(s) away soil and rock. a. desalination b. erosion c. valleys d. cycles Fill in the blank with the correct term. ___________ protect(s) soil from wind erosion. a. Urbanization b. Deserts c. Glaciers d. Plants Fill in the blank with the correct term. _______________, including aerial photography and satellite imaging, is used to know more about mineral deposits and freshwater sources, as well as to survey human activities. a. Cartography b. Remote sensing c. Direct observation d. A key