Browse "Biology"

Displaying 46-60 of 70 results

  • Article

    Genetics

    Genetics may be conveniently divided into 3 areas of study: transmission genetics, molecular genetics and population genetics.

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  • Article

    Greenhouse Crops

    Today's greenhouse industry uses the most modern technologies, which allow it to reduce their negative effects on the environment, to considerably improve the energetic efficiency of crops (used energy by unit production) and thus to remain competitive in national and international markets.

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  • Article

    Hanoverhill Starbuck

    Hanoverhill Starbuck, Holstein sire (born 26 April 1979 in Port Perry, ON; died 17 September 1998 in St-Hyacinthe, QC).

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  • Article

    Herbarium

    A herbarium (Lat herba, "herb," formerly any medicinal plant) is a collection of dried specimens of plants mounted on sheets of heavy paper and stored in cabinets or bound in book form, as well as the building that houses such a collection.

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  • Article

    History of Agriculture to the Second World War

    Canadian agriculture has experienced a markedly distinct evolution in each region of the country. A varied climate and geography have been largely responsible, but, in addition, each region was settled at a different period in Canada's economic and political development. The principal unifying factor has been the role of government: from the colonial era to present, agriculture has been largely state-directed and subordinate to other interests.

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  • Article

    Insect Classification

    A classification system acts as an efficient storage mechanism for information about each taxon or group.

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  • Article

    Insect Pests

    Insects and humans cohabit the Earth and have developed complex relationships. Insect pests (less than 1% of all species) are those insects that feed on, compete for food with, or transmit diseases to humans and livestock.

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    Irrigation

    Irrigation is warranted where the CLIMATE is essentially arid or semiarid and is characterized by low and unpredictable precipitation (see RAIN).

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    Lemming

    Lemming, stocky northern rodent related to voles. About 16 species occur worldwide; best known of the 7 Canadian species are brown and collared lemmings.

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    Lizard Species in Canada

    Lizards are reptiles that belong to several suborders within the order Squamata (which also includes snakes). They are the most diverse group of living reptiles and are found on all continents except Antarctica. There are six species of lizard currently found in Canada. In addition, one species, the pygmy short-horned lizard, is extirpated. This means that, while it continues to live in other parts of its range, it is no longer found in Canada. Five of the six lizard species in Canada are native, while the sixth, the common wall lizard, is introduced from Europe.

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    Molecular Biology

    Molecular Biology Molecular biology, subdiscipline of BIOCHEMISTRY that studies the structure, synthesis and degradation of macromolecules (very large molecules) found in living cells, their metabolic regulation (how they are interrelated and balanced during synthesis and degradation) and their expression (how the GENETIC code operates and is controlled through structural interrelationships). Macromolecules include the nucleic acids DNA (deoxyribonucleic acid) and RNA (ribonucleic acid); proteins (including enzymes); carbohydrates; and complexes of carbohydrates and proteins and lipids (soluble...

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    Molluscan Resources

    Although Canada's coastline is extensive and contains many diverse molluscan species, the resource is economically relatively small. In 1995 nearly 200 000 t valued at $114.5 million were taken. 

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    Morning Glory

    The morning glory family, containing 1200 species of herbaceous plants, is represented in Canada by cultivated common morning glory and 3 related species; 11 species of climbing, parasitic dodders; and 5 species of bindweed.

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    Neuroscience

    Neuroscience is the study of the structure and function of the nervous system. It includes a number of subfields such as neuroanatomy, neurochemistry, neuropharmacology, neurophysiology and the study of brain mechanisms in behaviour (neuroethology, neuropsychology, psychobiology and psychopharmacology). In addition, the medical fields of neurology, neurosurgery and psychiatry are closely related to that of neuroscience.

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  • Article

    Organic Agriculture

    Organic agriculture is defined as the sustainable cultivation of land for food production that nourishes soil life, nurtures animals in their natural environment and feeds them according to their physiology.

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