Browse "Nature & Geography"

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Abalone

Abalone (Haliotis), genus of primitive marine gastropod molluscs with over 70 species worldwide. There are 2 species in Canada. The pinto abalone (Haliotis kamtschatkana) also known as the Japanese or northern ear shell, is found along the entire BC coast.

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Acid Rain

Acid rain is the wet or dry deposition of acidic substances and their precursors on the Earth's surface. The ongoing industrialization of society has resulted in the increased release of acidic chemicals into the atmosphere.

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Aeolian Landform

Wind erosion processes consist of abrasion, the scouring of exposed surfaces by the sand-blasting action of wind-borne material; and deflation, the removal of sand-sized and smaller particles by the wind.

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Air Pollution

Air pollutants are substances that, when present in the atmosphere in sufficient quantities, may adversely affect people, animals, vegetation or inanimate materials.

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Alder

Alder, tree or shrub of genus Alnus of birch family. The 30 known species are found mainly in the northern hemisphere; 3 are native to Canada.

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Alderfly

Alderfly, small (13-18 mm), dark, soft-bodied insect of order Megaloptera, family Sialidae, found in freshwater habitats bordered by alder.

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Alfalfa

Alfalfa, or lucerne (genus Medicago), is a herbaceous perennial belonging to the legume family and grown as a forage crop.

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Algae

They are mostly photosynthetic organisms whose body is termed a thallus (ie; they lack leaves, stems and roots). All the photosynthetic forms possess chlorophyll a as their primary photosynthetic pigment. Algae also form unprotected reproductive structures.

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Allison Pass

Allison Pass, elevation 1,352 metres, is located at kilometre 60, the highest point on the Hope-Princeton Highway (opened 1949) through the Cascade Mountains of southern British Columbia.

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Aluminum

Pure aluminum (Al) is a silver-white, malleable, ductile metal with one-third the density of steel. It is the most abundant metal in the earth's crust.

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Amphibian

Amphibians are members of a group of tetrapod (4-legged) vertebrate animals derived from fishes, and are the common ancestor to mammals and reptiles.

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Anemone

Anemone, or wind flower, perennial, herbaceous plant of genus Anemone, family Ranunculaceae.

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Animal

Animal evolution has resulted in a vast number of adaptations for successful life under all sorts of conditions, so that there are now more kinds of animals than of all other living things combined.

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Animal Breeding

Domestication was performed through controlled mating and reproduction of captive animals which were selected and mated based on their behaviour and temperament.

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Animal Disease

The tissues and body fluids of animals are subject to the same types of abnormal structural and functional changes as are those of humans. Causes and circumstances may differ but the disease processes are very similar.