[ 277 ] Geography and the World GED ® TEST SOCIAL STUDIES FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Fill in the blank with the correct term. Overfarming, removing too much vegetation, and overgrazing livestock has led to ____________ in Europe. a. soil erosion b. deforestation c. increased vegetation, including trees, d. soil erosion and deforestation Fill in the blank with the correct term. Fossil fuel automobile exhaust causes ______________. a. acid rain, property damage, and environmental destruction b. biofuel c. natural gas d. El Niño Fill in the blank with the correct term. A ___________ is a triangular section of land formed by sand and silt carried downriver. a. delta b. cataract c. harmattan d. tornado