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The Ontario Science Centre is located in the Don Valley, Toronto. It was opened (1969) as one of Ontario's projects for the Canadian Centennial, funded both provincially and with a federal grant.

Ophthalmology is the medical specialty concerned with the eyes and their relationship to the body.

The Virginia opossum (Didelphis virginiana) is Canada’s only marsupial. It belongs to one of three marsupial families native to the Americas. The Virginia opossum’s northernmost range reaches into Southern and Southeastern Ontario, Southern Quebec and the lower Fraser Valley in British Columbia. However, this range is slowly expanding north, likely due to climate change.

Orthodox Church, also commonly known as the Eastern, Greek or Byzantine Church, a family of Christian churches historically found in eastern Europe, the Near East, Africa and Asia (see CHRISTIANITY).

Parasitology is a branch of biology dealing with organisms (animals or, rarely, plants) which live in or on other species (hosts) from which they derive nourishment.

Oyster is a common name for bivalve (hinged shell) molluscs, including true oysters (order Ostreoida) and tropical pearl oysters (order Pterioida), found chiefly in temperate and warm shallow waters.

The Battle of Paardeberg was the first major British success in the South African War since "Black Week," 10-15 December 1899. Faced by a reorganized British offensive directed at their capitals, the Afrikaners made a stand at Paardeberg, a point on the Modder River some 130 km from Bloemfontein.

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

The explorers amassed astronomical, meteorological, geological and magnetic data, and described the country, its fauna and flora, its inhabitants and its "capabilities" for settlement and transportation.

In 1984, with the advent of the Economic Regulatory Reform (ERR), most of Canada experienced a deregulation program similar to that in the United States. The ERR had several significant effects. Two large trunk carriers, CAI and Air Canada, emerged, competing on major domestic routes.

The Pacific Fur Company was established on 23 June 1810 and headed by New York fur dealer John Jacob Astor. Principal partners included ex-Nor'Westers Alexander McKay, Donald McKenzie and Duncan McDougall.

The paintbrush is a herbaceous plant of genus Castilleja , figwort family, Scrophulariaceae. Most are perennial. The common name, Indian paintbrush, is applied to several species. About 200 species occur worldwide, mostly in

Pipit is the common name for some birds of the family Motacillidae, which also includes wagtails.

Since its first commercial exploitation in the 1850s, petroleum has become the major energy source of Canada and the industrial world.

As each new area of Canada was opened to European settlement, pioneers faced the difficult task of building homes and communities from the ground up. Pioneer life revolved around providing the basic necessities of existence in a northern wilderness — food, shelter, fuel and clothing. Pioneering life was integral to family life and provided social stability for the settlement of a larger population across the country.

Of the world's 23 species, only the North American porcupine (Erethizon dorsatum) occurs in Canada, throughout mainland forests and thickets.

A witness in a judicial proceeding who knowingly gives false evidence with intent to mislead the judge or jury commits the crime of perjury. If a person knowingly makes a false statement under oath outside a judicial proceeding, he or she would also be guilty of an offence.

A Pinky Schooner was an ancient type of vessel adapted to a primitive sloop or schooner rig in the British North American colonies and widely used in the Maritime provinces until the early 1900s. Often less than 14 m long, they were cheap to build and ideally suited for fishing.

Political protest is the kind of political activity, eg, demonstrations, strikes and even VIOLENCE, usually but not always undertaken by those who lack access to the resources of organized PRESSURE GROUPS, or by those whose values conflict sharply with those of the dominant ELITE.