| A | B |
|---|
| archaeologist | a scientist who learns about people who lived long ago by studying the things they left behind |
| migrate | to move from one area to another area |
| glacier | a mass of ice that moves slowly over land |
| agriculture | skill in growing plants for food; farming |
| surplus | an extra amount of anything, but particularly of something people need |
| civilization | a culture with cities, a government, and many different jobs for people to do |
| woodlands | an area that is largely covered by trees |
| boundary | a line that separates the territory of one group from that of another |
| drought | a long period when almost no rain falls and crops are not able to grow properly |
