| A | B |
| A basin is | a low, bowl-shaped area with higher ground all around it |
| In which part of the United States are the Rocky Mountains located? | the western part |
| Which of these statements best tells how a river erodes the land? | The movement of water wears down the Earth's surface. |
| When a river leaves silt on the land, it is | building up the land |
| What causes the seasons? | The Earth is tilted on its axis as it moves around the sun. |
| How can an ocean affect climate? | It can make a place cooler in summer and warmer in winter. |
| Which of these is a manufacturing job? | sewing clothes |
| Which of these is a service job? | fixing refrigerators |
| One way farmers can conserve soil is to | plant rows of trees to block the wind |
| How can people help conserve mineral resources in the United States? | by recycling products made from metal |
| an area of high, mostly flat land | plateau |
| the place where a river empties into some larger body of water | mouth |
| a triangle-shaped area of land at the mouth of a river | delta |
| land almost entirely surrounded by water | peninsula |
| rain, sleet, or snow | precipitation |
| a natural resource used to make heat or energy | fuel |