Browse "Nature & Geography"

Displaying 466-480 of 740 results

  • Article

    Nematoda

    Nematoda are a phylum of unsegmented, cylindrical worms; approximately 30 000 species are known. 

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    https://d3d0lqu00lnqvz.cloudfront.net/media/media/e2c984dd-2472-47a7-bf74-ba5a722f3708.jpg Nematoda

  • Article

    Nepheline Syenite

    Nepheline syenite is a white to light grey medium-grained IGNEOUS ROCK. It consists mostly of soda feldspar, nepheline and potash feldspar, accessory magnesium and iron-rich minerals.

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Nepheline Syenite

  • Article

    Nickel

    The major contemporary use for nickel is as an alloying agent. Nickel is present in some 3000 different alloys that are used in more than 250 000 end-use applications. The most popular alloy in which nickel is used is stainless steel (seeIRON AND STEEL INDUSTRY).

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  • Article

    Nighthawk

    The nighthawk is a medium-sized bird of the goatsucker family (Caprimulgidae).

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    https://d3d0lqu00lnqvz.cloudfront.net/birdclassification/common-nighthawk.jpg Nighthawk

  • Article

    Nightshade

    Eight species of Solanum occur in Canada, of which only S. carolinense (horse or ball nettle), found in southern Ontario, is native. The most familiar nightshade found across Canada is S. dulcamara (climbing nightshade or European bittersweet).

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Nightshade

  • Article

    North American Racer

    The North American racer (Coluber constrictor) is a non-venomous snake that is native to North America. It has an extensive geographic range that extends from southern Canada south throughout most of the United States, parts of Mexico and into Guatemala and Belize. Eleven subspecies are recognized across this species’ range, three of which are found in Canada: the blue racer (Coluber constrictor foxii; ON), the Eastern yellow-bellied racer (Coluber constrictor flaviventris; SK, AB) and the Western yellow-bellied racer (Coluber constrictor Mormon; BC). (See also Snake Species in Canada.)

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    https://d3d0lqu00lnqvz.cloudfront.net/NorthAmericanRacer/BlueRacer.jpg North American Racer

  • Article

    North-West Territories (1870–1905)

    The North-West Territories was the first Canadian territory. It was Established on 15 July 1870. As a territory, the region became part of Canada. But it lacked the population, economic and infrastructure resources to attain provincial status. It thus fell under the jurisdiction of the federal government. It covered a vast area, stretching west from a disputed boundary with Labrador, across the northern portions of present-day Quebec and Ontario, through the Prairies to British Columbia, and north from the 49th parallel to the Arctic Ocean. The territory was subject to numerous boundary changes before 1905. At that time, the provinces of Saskatchewan and Alberta were carved out of the southwest portion of the region. In 1906, the remaining territory was renamed the Northwest Territories.

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  • Article

    Northern Gateway Pipeline Proposal

    The $7.9 billion Northern Gateway project was a pipeline proposal that Enbridge put forward in 2008. Northern Gateway would have carried diluted bitumen (“dilbit”) about 1,170 km from Bruderheim, Alberta to a terminal on the Pacific Ocean at Kitimat, British Columbia. Enbridge claimed that the project would create $1.2 billion in tax revenue for BC, as well as 560 jobs. The Federal Court of Appeal overturned the pipeline’s approval in 2016. That same year, the Liberal government of Prime Minister Justin Trudeau rejected the project.

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  • Article

    Northern Leopard Frog

    The Northern leopard frog (Lithobates pipiens, previously Rana pipiens) is a green or brown frog covered in large, distinct spots. In Canada, three populations exist: the Eastern population, the Western Boreal/Prairie population and the Rocky Mountain population. The Committee on the Status of Endangered Wildlife in Canada characterizes the Western Boreal/Prairie and Rocky Mountain populations as special concern and endangered, respectively. The Eastern population is considered widespread and abundant, although the population has shown evidence of decline.

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  • Editorial

    Not for Saps: Tree Planting in Alberta

    Over a century’s worth of shifting environmental policy means that today, maintaining Canada’s forests is as important as cutting them down. Tree planting is an essential part of this maintenance, and each year thousands of young Canadians trek through rough conditions and remote areas to replant thousands of trees.

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  • Article

    Oats

    Oats (Avena sativa), member of the grass family (Gramineae), are grown for cereal grains.

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  • Article

    Ocean Current

    An ocean current is a large (100 km or more), mostly permanent, horizontal movement of water at all depths in the oceans. Currents are generated by winds, excessive cooling or evaporation at the ocean surface (thermohaline processes) and tidal forces. 

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  • Article

    Octopus

    Octopus is the common name for all 8-armed cephalopod molluscs; it more properly refers to the largest genus in order Octopoda (over 100 species).

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Octopus

  • Article

    Oilseed Crops

    Oilseed Crops are grown primarily for the oil contained in the seeds. The oil content of small grains (eg, wheat) is only 1-2%; that of oilseeds ranges from about 20% for soybeans to over 40% for sunflowers and rapeseed (canola).

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  • Article

    Old-Growth Forests in Canada

    Old-growth forests are complex forest ecosystems that have developed over a long period of time without experiencing any major disturbances. They have unique features and significant ecological, social, cultural and economic value. Old-growth forests used to be a significant part of Canada’s forest landscape but now only exist as small, fragmented patches due to intensive logging (see Forest Harvesting), conversion of forest for agriculture, insect epidemics (see Four Major Insect Pests of Forests in Canada), wildfires and disease. Increasing measures to protect these ecosystems are being implemented across Canada to combat their continued decline.

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    https://d3d0lqu00lnqvz.cloudfront.net/oldgrowthforests/lady-slippers.jpg Old-Growth Forests in Canada