| |
| | CANADIAN SHIELD |
 | | Present-day elevations in the shield are mostly between 300 and 600 m (984 and 1969 ft), except in limited areas, such as the Québec-Labrador Peninsula, where they rise about 1070 m (about 3510 ft). |
 | | The climate is arctic in the northern shield, where the mean January temperature is about –32° C (–25° F), the growing season is less than 40 days a year, and lakes are free of ice for only about three months annually. |
 | | The northern Canadian Shield is sparsely populated, mainly by Inuit (Eskimo) and Indians, but the southern shield has numerous urban areas, which have developed principally as centers for exploiting natural resources. |
| www.history.com /encyclopedia.do?vendorId=FWNE.fw..ca024800.a#FWNE.fw..ca024800.a (679 words) |
|