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Pliocene epoch

(Encyclopedia) Pliocene epochPliocene epochplīˈəsēn [key], fifth epoch of the Cenozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), from 5.1 to 2 million years ago.…

Agassiz, Louis

(Encyclopedia) Agassiz, Louis (Jean Louis Rodolphe Agassiz)Agassiz, LouiszhäN lwē rôdôlfˈ [key] Agassiz, Louisăgˈəsē [key], 1807–73, Swiss-American zoologist and geologist, b. Môtiers-en-Vuly,…

swamp

(Encyclopedia) swamp, shallow body of water in a low-lying, poorly drained depression, usually containing abundant plant growth dominated by trees, such as cypress, and high shrubs. Swamps develop in…

erosion

(Encyclopedia) erosionerosionĭrōˈzhən [key], general term for the processes by which the surface of the earth is constantly being worn away. The principal agents are gravity, running water, near-…

sequoia

(Encyclopedia) sequoiasequoiasĭkwoiˈə [key], name for the redwood (Sequoia sempervirens) and for the big tree, or giant sequoia (Sequoiadendron giganteum), both huge, coniferous evergreen trees of…

sand

(Encyclopedia) sand, rock material occurring in the form of loose, rounded or angular grains, varying in size from .06 mm to 2 mm in diameter, the particles being smaller than those of gravel and…

NATIONAL PARKS

Name, location, and year authorized Acreage Outstanding characteristicsAcadia (Maine), 1919 47,548.94Rugged seashore on Mt. Desert Island and adjacent mainlandArches (Utah), 1971 76,518.98…

New Hampshire

New Hampshire State Information  Capital: Concord Official Name: New Hampshire Organized as a territory/republic: 1629 Entered Union (rank): June 21, 1788 (9th state) Present constitution…

continental drift

(Encyclopedia) CE5 Continental drift (arrows indicate the directions of motion of the landmasses) A. Proposed reconstruction of the supercontinent Pangaea indicating the major present landmasses B…

Words of Four Letters

Try the Find a Word: Crossword Search Aborigine: Borneo, DYAKAgave, ALOEAnimal: Footless, APODAnt: White, ANAI, ANAYAntelope: African, ASSE, BISA, GUIB, KOBA, KUDU, ORYX, POKU, PUKU, TOPI,…