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

Genetic diseases result from chromosome abnormalities or mutant genes showing a specific pattern of inheritance. In addition, genetic factors are involved in susceptibility to some nongenetic DISEASES.

Farm silos are storage structures for silages and high-moisture grains used for livestock feeds. Silos are a common fixture in livestock and mixed-farming operations across Canada.

Before 1900 a published "flora" was, loosely defined, a comprehensive, itemized description of the plants of a specific geographical region. Usually more than a mere list, it should have been an analytical description, discussing habitats and distribution and citing previous authorities.

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.

Entomology is the branch of zoology dealing with the study of insects, although which organisms are included is open to interpretation.

Modern understanding of evolution began in 1859 with publication of Charles Darwin's On the Origin of Species by Means of Natural Selection.

Long before formal study of plants began in Canadian academic institutions, they were studied by explorers and talented amateurs.

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.

Biochemistry, encompasses the study of the chemical nature of living material and of the chemical transformations that occur within it.

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

The study of plant life is organized in 3 ways, which are also applicable to zoological material.

The word bioethics is formed from the Greek word for life (bios) and the traditional word for the systematic study of right conduct (ethics).

Brachiopoda, phylum of bivalved marine invertebrates, sometimes called lamp shells.

Consumers normally consider that the term "food additive" refers to almost all substances, primarily chemical in nature, added to foods during production, manufacture, packaging or storage.

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).

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.