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Witch Hazel

Witch Hazel is the common name for a family (Hamamelidaceae) of trees or shrubs and refers especially to members of the genus Hamamelis.

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Miguasha Fossils

 In addition to fishes, a few INVERTEBRATES, such as small CRUSTACEANS, worms and eurypterids, which are giant cousins of land scorpions, lived at the bottom of the estuary.

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Weather

WEATHER FORECASTING is the attempt to understand atmospheric patterns to predict the weather conditions that will occur at a specific place and time, including temperature, wind, cloud, precipitation and humidity.

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Whelk

Whelkis the common name for a carnivorous marine snail which may be included with the Buccinid, Muricid or Purpurid families.

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Weather Forecasting

Most modern meteorologists attempt to cope with physical processes by expressing them mathematically, ie, by creating mathematical models of the atmosphere. Powerful computers are then used to solve problems.

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Weathering

Fragmented rock materials formed by mechanical weathering are normally larger than clay particles. These materials constitute major sources of sediment for later erosion, transportation and deposition under the impetus of gravity, wind, water or ice.

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Violet

The Violet is a family (Violaceae) of annual or perennial herbaceous plants widely distributed throughout temperate and tropical regions. Tropical species may reach tree size. Roughly 500 species of genera Viola (violets, pansies) and Hybanthus (green violets) alone occur worldwide.

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Weeds

Weeds are plants growing where humans do not want them.

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Yew

Yew is the common name for evergreen conifers, genus Taxus, of the yew family (Taxaceae).

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Zinc

Zinc (Zn) is a bluish-white metal of low to intermediate hardness that melts at 419°C and is estimated to comprise about 0.013% of the earth's crust. Zinc is an essential element for human health; over 200 enzymes in the body require zinc for proper functioning.

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Water Lily

A large family of freshwater plants known as the water lily (Nymphaeaceae) is characterized by large, shield-shaped leaves and showy blossoms. They are mostly tropical or subtropical. Four genera and 9 species are native to Canada, of which 3 species are important.

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Wintergreen

Wintergreen is the common name for smooth, low-growing, woodland, herbaceous plants in genus Pyrola of the wintergreen family (Pyrolaceae). These plants were known to the Cree as "beaver's ears" because of their small, round, evergreen leaves. Nine of the 12 known species are native to Canada.

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Wolverine

Wolverine, or carcajou (Gulo gulo), largest of the weasels, resembles a powerful, miniature bear.

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Weather Observations

   Weather in Canada ranges from the extreme cold of the Arctic to tornadoes and other severe weather in the southern regions; from the storms and fog of the Atlantic to the dry heat and majestic thunderstorms of the prairies.

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Waterfall

A waterfall is a phenomenon which occurs when water flowing in a river channel encounters a vertical or near-vertical drop in the channel bed.

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Walrus

The walrus is a tusked, fin-footed mammal. In Canada, the Atlantic walrus is found primarily along the northern coasts of Hudson Bay, Davis Strait, Foxe Basin and Baffin Bay.

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Wildflowers

There are approximately 4000 species of flowering plants in Canada, of which about 3000 may be considered wildflowers. About one-quarter of these have been introduced from other regions of the world.

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Vulture

The vulture is a large, long-winged, bald-headed bird of prey, normally abundant in warmer latitudes.