The most populous cities in the northeast are

_in the farming regions

.along the atlantic coast

,in the appalachian mountains

? along inland waterways

Where was oil production at its highest in the 1980s and still remains important to the russian economy? central asia the ural mountains russian siberia the caucasus region

Which of the following regions suffers the most from acid rain? a. the area around vancouver c. the area below atlanta b. the area below detroit d. the area above montreal

How are the arctic and antarctic circles alike?