| A | B |
|---|
| glacier | a large mass of ice and snow |
| settlement | a small group of homes in an area that has not been populated |
| specialize | to work in, and know a lot about, one job or field |
| craft | a trade or art that takes special skill with the hands |
| fertile | able to produce large crops, as in rich soil |
| crescent | something shaped like a quarter moon |
| swamp | an area of low, wet land |
| irrigate | to bring water to dry land by means of canas |
| canal | a waterway made by humans |
| dike | a wall built along a river or sea to hold back the water from low land |
