Nature & Geography | The Canadian Encyclopedia

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  • Article

    Pea

    Some pea cultivars are grown in gardens for their tender green pods as VEGETABLES, which are harvested at their early stage of development, and eaten raw or cooked. They are known as snowpeas, sugar peas or snap peas. In parts of Asia and Africa, tender pea foliage is harvested as vegetable.

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  • Article

    Peach

    The peach (Prunus persica) is the most widely grown stone fruit. It is native to China and was introduced to Europe 2,000 years ago. Peaches are now grown in temperate zones, worldwide.

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    Pear

    The pear (genus Pyrus) is a common name for over 20 species of fruit-bearing and ornamental trees of the rose family.

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  • Article

    Peat

    Peat, living and partially decomposed organic matter, consists principally of decayed brown mosses, Sphagnum plants, sedges and other semiaquatic plant remains.

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  • Article

    Pelican

    The Pelican family (Pelecanidae) consists of large water birds with long, flat bills, expandable throat pouches, and 4 toes connected by a web.

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  • Article

    Pepper

    Pepper (Capsicum annuum) is a perennial plant, cultivated as an annual and belonging to the nightshade family.

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    Perch

    Although perch is the common name for several distantly related species of fish, it properly refers to members of the perch family (Percidae), order Perciformes, class Actinoperygii.

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    Peregrine Falcon

    The peregrine falcon (Falco peregrinus) is a crow-sized, long-winged bird of prey, generally acknowledged to be the swiftest bird (attaining speeds of over 320 km/h).

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  • Article

    Periglacial Landform

    A periglacial landform is a feature resulting from the action of intense frost, often combined with the presence of permafrost. Periglacial landforms are restricted to areas that experience cold but essentially nonglacial climates.

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    Periwinkle

    Periwinkle is a common name for any of the edible intertidal snails of the genus Littorina. Periwinkles are represented by 6 species in Canadian coastal waters.

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  • Article

    Permafrost

    Permafrost is ground remaining at or below 0°C continuously for at least two years. About 50 per cent of Canada is underlain by permafrost, mainly in the Arctic Archipelago, Yukon, Northwest Territories and Nunavut.

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  • Article

    Persistent Organic Pollutants

    Persistent organic pollutants (POPs) are carbon-based chemical compounds or groups of chemical compounds of anthropogenic (resulting from human activities) origin that are biologically and chemically inert.

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    Pesticide

    Substances used to control pests include insecticides (for control of insects), fungicides (for disease-causing fungi), herbicides (for weeds), rodenticides (for rodents), avicides (for birds), piscicides (for fish) and nematicides (for nematodes).

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    Phalarope

      The phalarope (family Scolopacidae) is a sandpiperlike shorebird, highly specialized for aquatic life. Only 3 species are found worldwide and all occur in Canada.

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  • Article

    Pheasant

    Pheasant is the common name of birds in the family Phasianidae.

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