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Groundwater interacts with lakes and rivers as part of the hydrologic cycle. The cycle begins with the formation of clouds through evaporation from the ocean, lakes, rivers, plants and soil.

Hawk is a common name for several species of diurnal birds of prey from widely separate families.

Arctic sovereignty is a key part of Canada’s history and future. The country has 162,000 km of Arctic coastline. Forty per cent of Canada’s landmass is in its three northern territories. Sovereignty over the area has become a national priority for Canadian governments in the 21st century. There has been growing international interest in the Arctic due to resource development, climate change, control of the Northwest Passage and access to transportation routes. As Prime Minister Stephen Harper said in 2008, “The geopolitical importance of the Arctic and Canada’s interests in it have never been greater.”

Ecology is subdivided into 3 fields of study: autecology (relations of individual species or populations to their milieu), synecology (composition of living communities) and dynecology (processes of change in related communities).

Canada’s national parks are protected areas established under federal legislation to preserve Canada’s natural heritage. They are administered by Parks Canada, a government agency that evolved from the world’s first national parks service, the Dominion Parks Branch, established in 1911. The National Parks System Plan, developed in 1970, divided Canada into 39 natural regions and set the goal of representing each region with at least one national park. Canada now has 48 national parks and national park reserves in 30 of these regions. In total, the parks cover more than 340,000 km2, which is over 3 per cent of Canada’s landmass. They protect important land and marine habitats, geographical features and sites of cultural significance. National parks also benefit local economies and the tourism industry in Canada.

The swallow (Hirundinidae) is a small family of birds including about 87 species worldwide, of which 7 breed in Canada.

Cougar, puma or mountain lion (Felis concolor, family Felidae), is the most gracile of the New World wild cats.

 The tern is a medium-sized bird of the GULL family. Terns are usually grey and white; in spring and summer most species have a black cap. Similar to gulls in appearance, terns differ in having more pointed wings and usually a noticeably forked tail.

Gem-quality diamonds crystallize as octahedrons (8 faces), trisoctahedrons (24 faces), hexoctahedrons (48 faces) or a combination of these. Diamond owes its supreme standing among all the gemstones to 4 specific attributes.

Chromium (Cr) a hard, brittle, silver-white metal (melting point 1875° C), is widely known for its use as decorative trim on home appliances and automobiles. However, its most important use is in the manufacture of stainless STEEL, which typically contains about 20% chromium.

Warbler is a name applied to several groups of birds, primarily the New World wood warblers, and Old World warblers of which only 3 species commonly breed in Canada.

Cascade Mountains, BC, are the north end of largely volcanic mountain ranges extending to California, 180-260 km east of the Pacific Ocean. There are no active volcanoes in BC like the US Cascades' Mount St Helens and others.

Bras d'Or Lake, 1099 km2, is an arm of the Atlantic Ocean occupying the centre of Cape Breton Island that nearly divides the island in two. On the north it is linked to the ocean by a narrow channel down the west side of Boularderie Island.

Natural regions are intended to describe areas of the Earth's surface which possess similar qualities or attributes. They may refer to either land or water, and can vary in size. The term “natural region” is often used interchangeably with the word “ecozone.”

Snipe is the name given to 19 species of small to medium-sized shorebirds (254-406 mm) of the sandpiper family.

The Prairie Farm Rehabilitation Administration (PFRA) was a branch of Agriculture and Agri-Food Canada with a focus on Western Canada. It was headquartered in Regina, Saskatchewan. The PFRA also had 22 district offices throughout the Prairie provinces. The agency began in response to the drought crisis of the 1930s in the Prairies. However, for nearly eight decades, it continued to help farmers conserve soil, prevent erosion, develop water resources and manage pasture land.

Winter is the season that begins December 21 (winter solstice) and ends on March 21 (spring Equinox). In Canada cold and snow is associated with this season.