The Great Lakes and St. Lawrence Lowlands region has flat plains, river valleys and hills containing the Great Lakes. It has a humid climate due to the moderating effect of the lakes, which store heat and lead to large temperature variations between warm summers and cold winters. Originally heavily forested with fertile soil, the region now contains mixed coniferous and deciduous forests and faces environmental concerns from industrial emissions.

1. Great Lakes and St.
Lawrence Lowlands
8 Physical Regions of North America

2. Topography
● Flat plains, river valleys and hills
● Smallest region in Canada
● Contains Lake Ontario, Hudson and Erie
● Many cliffs formed by erosion

3. Climate
● Humid climate because of lakes
● Great Lakes store heat
● Large temperature range
● Winters and summers vary

4. Vegetation
● Originally heavily treed and had fertile soil
● Mixed Conifer and Deciduous Forests in the region
● Used to house largest broad-leaf forest

5. Environmental Concerns
● Smoke from manufacturing plants
● Carbon monoxide emissions from cars
● Carbon dioxide from cement plants

6. Economic Activity
● Farming dairy, poultry and meat
● Manufacturing industrial and farm chemicals
● Cars and car parts are manufactured