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Eastmain

Eastmain (or East Main) refers to the east shore of Hudson Bay, although in the 1680s the term was restricted to the vicinity of the Eastmain River. The corresponding reference to the west shore of Hudson Bay is the Westmain (West Main).

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Drainage Basin

A drainage basin is an area of land that contributes the water it receives as precipitation to a river or network of rivers.

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Cassiar District

The Cassiar District lies in British Columbia's northwest corner; it historically encompasses the Stikine and Dease River watersheds and that of the upper Taku, NASS and Kechika.

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Horton Plain

The vegetation is low arctic tundra in the N, dominated by dwarf shrubs and grasses, and woodland in the S, consisting of scattered, stunted spruce with a lichen carpet. The summer range and calving grounds of the large Bluenose caribou herd lie within this region.

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Holland Marsh

Holland Marsh, 2900 ha of organic (muck) soil, is located near Bradford West Gwillimbury, Ont, 50 km north of Toronto.

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Desert

The paucity of precipitation in deserts is due to one or a combination of causes.

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Laurentian Highlands

Although the other limits are less well defined, the highlands may be considered to extend 100-200 km northward from the scarps and to stretch from the Gatineau River in the west (mean elevation 400 m) some 550 km to the SAGUENAY RIVER in the northeast.

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Labrador Highlands

Formed of ancient Precambrian rocks and heavily glaciated during the Quaternary (1.65 million to 10 000 years ago), the mountains support more than 70 small glaciers, the southernmost in eastern North America.

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Muskeg

Muskeg (from Cree maskek and Ojibwe mashkiig, meaning “grassy bog”) is a type of northern landscape characterized by a wet environment, vegetation and peat deposits. Chiefly used in North America, the term muskeg escapes precise scientific definition. It encompasses various types of wetlands found in the boreal zone, including bogs, fens, swamps and mires. In Canada, muskeg and other peatlands cover up to 1.2 million km2, or 12 per cent of the country’s surface.

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Moon

The dark grey lunar surface reflects only 7% of the sunlight it receives (comparable to the reflectivity of black soil). The moon is dominated by thousands of craters, ranging from microscopic pits to gigantic Clavius, diameter 230 km.

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Forest

Main Forest TypesWorldwide there are 3 main forest types related directly to climatic zones: equatorial- and tropical-region forests, temperate-zone forests, and forests associated with colder climates.

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James Bay

James Bay is the southern appendage of Hudson Bay. It is about 160 km wide between Pointe Louis-XIV on the east coast and Cape Henrietta Marie on the west.

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Peace River Lowland

The Peace River Lowland is a gently rolling lowland without clearly defined outer boundaries, extending east of the Rocky Mountains on both sides of the Peace River, sloping downward to the north and east.

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St. Lawrence Lowland

St. Lawrence Lowland is a plain along the St. Lawrence River between Québec City in the east and Brockville, Ontario, in the west, including the Ottawa River valley west to Renfrew, Ontario.

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Foothills

Foothills, a region of rolling, undulating or hilly terrain lying between an area of plains and a mountain range.

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Thousand Islands

Thousand Islands (Ontario part), an 80 km long section of the St Lawrence River, extending downstream from Lake Ontario between Kingston and Brockville and containing over 1000 rocky, wooded islands which range from several square kilometres to barely emergent rocks and shoals.