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rattlesnake

(Encyclopedia)rattlesnake, poisonous New World snake of the pit viper family, distinguished by a rattle at the end of the tail. The head is triangular, being widened at the base. The rattle is a series of dried, ho...

rain

(Encyclopedia)rain, precipitation in liquid form. It consists of drops of water falling from clouds; if the drops are very small, they are collectively termed drizzle. Rain plays a key role in the hydrologic, or wa...

Greene, Nathanael

(Encyclopedia)Greene, Nathanael, 1742–86, American Revolutionary general, b. Potowomut (now Warwick), R.I. An iron founder, he became active in colonial politics and served (1770–72, 1775) in the Rhode Island a...

Northern Territory

(Encyclopedia)Northern Territory, territory (2016 pop. 228,833), 520,280 sq mi (1,347,525 sq km), N central Australia. It is bounded on the N by the Timor Sea, the Arafura Sea, and the Gulf of Carpentaria. Darwin i...

Kamchatka

(Encyclopedia)Kamchatka kămchătˈkə [key], peninsula, 104,200 sq mi (269,878 sq km), Kamchatka Territory, Russian Far East, separating the Sea of Okhotsk in the west from the Bering Sea and the Pacific Ocean in ...

Cambrian period

(Encyclopedia)Cambrian period [Lat. Cambria=Wales], first period of the Paleozoic geologic era (see Geologic Timescale, tablegeologic timescale, table) extending from approximately 570 to 505 million years ago. It ...

pollination

(Encyclopedia)pollination, transfer of pollen from the male reproductive organ (stamen or staminate cone) to the female reproductive organ (pistil or pistillate cone) of the same or of another flower or cone. Polli...

Mojave Desert

(Encyclopedia)Mojave or Mohave Desert, c.15,000 sq mi (38,850 sq km), region of low, barren mountains and flat valleys, 2,000 to 5,000 ft (610–1,524 m) high, S Calif.; part of the Great Basin of the United States...

tuna

(Encyclopedia)tuna or tunny, game and food fishes, the largest members of the family Scombridae (mackerel family) and closely related to the albacore and bonito. They have streamlined bodies with two fins, and five...

skunk

(Encyclopedia)skunk, name for several related New World mammals of the weasel family, characterized by their conspicuous black and white markings and use of a strong, highly offensive odor for defense. The scent gl...