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snake, in zoology

(Encyclopedia)snake, common name for an elongated, limbless reptile of the order Squamata, which also includes the xlizards. Most snakes live on the ground, but some are burrowers, arboreal, or aquatic; one group i...

migration of animals

(Encyclopedia)migration of animals, movements of animals in large numbers from one place to another. In modern usage the term is usually restricted to regular, periodic movements of populations away from and back t...

nucleic acid

(Encyclopedia)CE5 Replication of strands of DNA CE5 nucleic acid, any of a group of organic substances found in the chromosomes of living cells and viruses that play a central role in the storage and replica...

marijuana

(Encyclopedia)marijuana or marihuana, drug obtained from the flowering tops, stems, and leaves of the hemp plant, Cannabis sativa (see hemp) or C. indica; the latter species can withstand colder climates. It is one...

insect

(Encyclopedia)CE5 External anatomy of a female grasshopper, representative of the class Insecta insect, invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a ...

Constellations (table)

(Encyclopedia)Constellations 1 Zodiac constellation. ...

Quebec, province, Canada

(Encyclopedia)CE5 Quebec kābĕkˈ [key], province (2001 pop. 7,237,479), 594,860 sq mi (1,553,637 sq km), E Canada. During the 20th cent. great economic growth in Quebec was coupled with increased determina...

Arctic, the

(Encyclopedia)CE5 Arctic, the northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30′N) but are usually defi...