| A | B |
| region | part of the earth's surface that has common characteristics |
| geography | study of earth and the way people use it |
| climate | general weather conditions of an area over a long period of time |
| precipitation | water that falls to the earth as rain, snow, sleet or hail |
| economy | production and distribution of goods and services |
| population | number of people who live in an area |
| landform | feature of the earth's surface created by nature |
| glacier | huge mass of ice that moves across land until it melts |
| till | soil made of clay, sand, gravel, and other materials left by a glacier |
| silt | small pieces of soil left by water or wind |
| natural resource | any useful material from the earth, such as water, oil or minerals |
| conservation | protecting resources |
| recycle | to reuse resources |
| environment | things that surround us |
| vegetation | plant life |
| survey | to measure the size, shape, boundaries or other features of an area |