Search for ""

Displaying 421-440 of 897 results
Article

Silviculture

Silviculture is the branch of FORESTRY that deals with establishing, caring for and reproducing stands of trees for a variety of forest uses including wildlife habitat, timber production and outdoor recreation.

Article

Tantramar Marsh

The Tantramar marsh is one of four saltwater tidal marshes covering 20,230 ha on the narrow Chignecto Isthmus that connects New Brunswick and Nova Scotia.

Article

Snail

Snail, common name for members of several groups of gastropod molluscs. Snails inhabit all moist habitats, but most forms are marine.

Article

Soil

Soil is the thin, fragile surface layer of Earth. It is a dynamic, loose and porous body of variable thickness (between a few centimetres and a few metres). Soil is formed by continuous transformations of rock or deposit through physical, chemical and biological processes. It is one of the two main components of Earth — the other being oceans — in which life is particularly active. Soil is the source and site of many human activities, and human life greatly depends on it. In Canada, agricultural, environmental and natural-resource scientists are at the forefront of research on soil.

Article

Soybean

Soybean (Glycine max) is a herbaceous annual belonging to the legume family, grown as an oilseed crop in Canada.

Article

Squid

Squid are decapods ("10-footed") molluscs of class Cephalopoda. Squid are usually of the order Teuthoidea).

Article

Silver

Important producing countries now are Mexico, Peru, the Commonwealth of Independent States, the US, Canada, Australia, Chile, Poland and China. Photographic films and papers account for about 25% of the demand for silver.

Article

Snipe

Snipe is the name given to 19 species of small to medium-sized shorebirds (254-406 mm) of the sandpiper family.

Article

Stonefly

Stonefly is the common name for small to medium-sized, usually brown, aquatic insects of order Plecoptera.

Article

Weasel

The weasel is a small, long-bodied, carnivorous mammal of the family Mustelidae. Three species of weasels are found in Canada: the short-tailed weasel, also known as the ermine or stoat (Mustela erminea), the long-tailed weasel (Mustela frenata), and the least weasel (Mustela nivalis). The least weasel is the smallest species in the order carnivora. The genus Mustela also includes mink, black-footed ferret, and the introduced European ferret.

Article

Titanium

Titanium (Ti) is a metallic element estimated to form about 0.5% of the rocks of the Canadian SHIELD. Titanium minerals of commercial importance include the dioxides rutile and anatase, which are polymorphs of TiO2 and ilmenite (FeO.TiO2), a mineral that contains 52.7% TiO2.

Article

Tobacco

Tobacco (Nicotiana tabacum) is an annual (potentially perennial) herbaceous plant of the nightshade family.

Article

Thrasher

Thrashers (Mimidae) are a small family of slender, long-tailed, medium-sized, insectivorous and frugivorous birds with loud, musical, repetitive songs.

Article

Tobacco-Products Industry

Although Canada's tobacco industry has developed largely during this century, tobacco growing goes back to early colonial days, when settlers around the St Lawrence River adopted the smoking customs of aboriginal peoples. French settlers began by copying the agricultural model set by the Indians.

Article

Tidal Energy

Tidal energy is a largely untapped, renewable energy source based largely on lunar gravitation. While the potential of tidal hydroelectricity has long been recognized, compared to river dams, tidal power projects are expensive because massive structures must be built in difficult saltwater environments.

Article

Thunderstorm

Thunderstorms usually occur on summer afternoons. While a thunderstorm typically affects a given locality for only an hour or so during its passage overhead, the entire lifetime may be as long as 6-10 hours, along a pathway of several hundred kilometres.

Article

Sumac

Sumac is a shrub of the genus Rhus of the family Anacardiaceae.

Article

Swift

Swift is a common name for about 100 species of birds in 2 closely related families (Apodidae, Hemiprocnidae).

Article

Thistle

The thistle (Carduaceae tribe, family Compositae or Asteraceae) is a spiny herbaceous plant with white or purple flowers. There are 800 species worldwide, 46 in Canada (15 native). Native species (none serious WEEDS) are mainly "true" or "plumed" thistles of genus Cirsium.

Article

Toad

Toad is a common name for certain members of the amphibian order Anura, the frogs.