Browse "Science & Technology"

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Biogeoclimatic Zone

For example, in British Columbia, the Coastal Western Hemlock Zone is one of 14 biogeoclimatic zones. It occupies high precipitation areas up to 1000 m elevation west of the coastal mountains from the Washington to Alaska borders and beyond.

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Biogeography

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).

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Biological Product

A biological product is a substance derived from a living organism and used for the prevention or treatment of disease. Biologicals are usually too complex for chemical synthesis by a laboratory. These products include antitoxins, bacterial and viral vaccines, blood products and hormone extracts.

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Biology

Biological studies of individuals and groups of organisms can occur at various levels (eg, molecular, cellular, anatomical, functional, behavioural, ecological and evolutionary).

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Biomass Energy

Biomass energy, or bioenergy, is the energy stored in biomass — that is, nonfossil organic materials such as wood, straw, vegetable oils and wastes from forestry, agriculture and industry, as well as municipal solid waste.

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Biosphere Reserve

The biosphere is that part of our planet that supports life. Biosphere reserves are special places chosen to become models of how we should live with nature. The Biosphere Reserve Program, initiated in 1974, is a network of over 350 sites around the world that share ideas and experiences.

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Biotechnology

Biotechnology was defined by the 1981 Federal Task Force on Biotechnology (Brossard Committee) as the "utilization of biological processes, be they microbial, plant, animal cells or their constituents, for the provision of goods and services.

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Birchbark Canoe

The birchbark canoe was the principal means of water transportation for Aboriginal peoples of the Eastern Woodlands, and later voyageurs, who used it extensively in the fur trade in Canada.

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Birthing Practices

Birthing practices in Canada have been shaped by periods of distinct though overlapping emphasis. During the first third of the century, the chief preoccupation was the high maternal mortality associated with childbirth.

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Bitumen

One of the easiest ways to understand bitumen is to compare it to its cousin, conventional crude oil. Whereas conventional crude oil flows freely, bitumen does not. At room temperature it looks like cold molasses, and must be either heated or diluted before it flows.

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Black Hole

Einstein's General Theory of Relativity is used to study black holes, since the older Newtonian theory of gravity does not provide an adequate basis for discussing the curved space-time near them.

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Blacksmithing

All these workers practised a technology that came from the great French craft tradition; their highly skilled art derived from trade guild knowledge, instruction and scientific treatises.

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Blindness and Visual Impairment

In Canada the largest agency serving blind and visually impaired persons is The Canadian National Institute for the Blind. CNIB has 9 geographic service divisions with over 60 regional offices, and the CNIB Library for the Blind serves all areas of Canada.

Macleans

Blood Substitute Tested

According to medical lore, the ancient Incas were the first to attempt blood transfusions. And over the centuries doctors around the world have pumped everything from beer to urine into hemorrhaging patients.