Browse "Nature & Geography"

Displaying 286-300 of 933 results

  • Article

    Echinodermata

    Echinodermata [Gk "spiny skin"], phylum of exclusively marine invertebrate animals. The 6000 known species occur from shores to greatest depths of all oceans. 

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  • Article

    Ecosystem

    A limited space within which living beings interact with nonliving matter at a high level of interdependence to form an environmental unit is called an ecosystem.

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  • Article

    Edmonton Tornado (1987)

    The Edmonton Tornado (also referred to as Black Friday) was an exceptionally powerful and devastating tornado that touched down at 2:55 p.m. Mountain Time (MT) on Friday, 31 July 1987. The tornado struck the eastern edge of Edmonton, Alberta, and parts of neighbouring Strathcona County. It was categorized as an F4 tornado on the Fujita tornado measurement scale, corresponding to an EF4 on the Enhanced Fujita scale. It was the second deadliest tornado in Canadian history, after the Regina Cyclone of 1912, also rated F4. As of 2024, it is the deadliest and most destructive tornado in Alberta’s history, claiming 27 lives.

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  • Article

    Edmontosaurus

    Edmontosaurus is a genus of large, plant-eating, duckbilled dinosaur. There are two species of Edmontosaurus. One, E. regalis, lived between 73.1 and 69.6 million years ago in Alberta. The other, E. annectens, lived between 68 and 66 million years ago in Saskatchewan, Montana, North Dakota, South Dakota, and possibly Alberta. Edmontosaurus was one of the largest North American herbivores of its time and even surpassed Tyrannosaurus rex in size. The first specimen to be called Edmontosaurus was discovered in 1912 in the Drumheller area. It became the first mounted dinosaur skeleton on display in Canada. 

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    https://d2ttikhf7xbzbs.cloudfront.net/media/new_article_images/Edmontosaurus/EdmontosaurusRegalisResized.jpg Edmontosaurus

  • Article

    Eel

    Eel, snakelike fish of class Actinopterygii, order Anguilliformes (or Apodes). 

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  • Article

    Eggplant

    Eggplant (Solanum melongena var. esculentum), or aubergine, perennial herbaceous plant of the nightshade family.

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  • Article

    El Niño

    El Niño is a pronounced warming of the Pacific Ocean current off the coast of South America.

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  • Article

    Elder

    Elder, shrub of genus Sambucus, family Caprifoliaceae (honeysuckle). Elders grow up to 3 m high and spread to form thickets. About 20 species are known worldwide; 3 are native to Canada.

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  • Article

    Ellesmere Island Eocene Fossils

     Having been mapped on foot, by dogsled, and from the air by rugged geologists from the GEOLOGICAL SURVEY OF CANADA, the Canadian High Arctic was untouched by vertebrate palaeontologists until the mid-1970s.

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  • Article

    Ellesmere Island Pliocene Fossils

    Toward the close of the Tertiary (5 to 2 million years ago) and the beginning of the ice age (Quaternary - about 2 million years ago), a beaver pond existed on what is now Canada's Ellesmere Island, Nunavut.

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  • Article

    Elm

    Elm (Ulmus), genus of trees of elm family (Ulmaceae), found only in temperate regions of the Northern Hemisphere. 

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

  • Article

    Endangered Animals in Canada

    Many animals in Canada face the risk of extinction. Animals are put at risk for several reasons, including: climate change, the loss of forest and grassland to cities and agriculture, hunting, fishing, and the pollution of lakes and rivers. As of 2021, 554 animal species are at risk in Canada, according to the Committee on the Status of Endangered Wildlife in Canada. In addition, 18 are extirpated and 18 extinct. The committee’s definition of a wildlife species includes taxonomic categories as well as geographically distinct populations. For example, the beluga whale (Delphinapterus leucas) is included in the list of at risk animal species six times, as there are six different populations facing different threats to their survival. (See also Endangered Plants in Canada.)

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    https://d2ttikhf7xbzbs.cloudfront.net/media/media/d94ee6d6-cf87-4001-9183-a07490901889.jpg Endangered Animals in Canada

  • Article

    Endangered Plants in Canada

    A species is endangered if there are threats to its survival. Plants are put at risk for several reasons, including: climate change and the loss of natural habitat to cities, agriculture and industry. In Canada, these activities threaten entire natural ecosystems, such as older forests and Prairie grasslands. As of 2021, 250 plant species are at risk in Canada, according to the Committee on the Status of Endangered Wildlife in Canada. In addition, four are extirpated and one is extinct. The committee’s definition of a wildlife species includes taxonomic categories as well as geographically distinct populations. For example, the bent spike-rush (Eleocharis geniculate) is included on the list of at risk plant species twice, as there are two different populations, one in British Columbia and one in Ontario, facing different threats to their survival. (See also Endangered Animals in Canada.)

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  • Macleans

    Endangered Species Protection

    Grant Fahlman, 51, has lived his whole life on the farm 25 km southeast of Regina where his family settled when they came from Russia in 1889, and this year was the first in his memory that no burrowing owls raised their broods in his pasture.This article was originally published in Maclean's Magazine on December 20, 1999

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    https://development.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Endangered Species Protection

  • Article

    Endive

    Endive, or escarole (Cichorium endivia), herbaceous biennial vegetable belonging to the Compositae family.

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