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extinction

(Encyclopedia)extinction, in biology, disappearance of species of living organisms. Extinction usually occurs as a result of changed conditions to which the species is not suited. If no member of the affected speci...

horticulture

(Encyclopedia)horticulture [Lat. hortus=garden], science and art of gardening and of cultivating fruits, vegetables, flowers, and ornamental plants. Horticulture generally refers to small-scale gardening, and agric...

Glen Canyon Dam

(Encyclopedia)Glen Canyon Dam, 710 ft (216 m) high, 1,560 ft (475 m) long, NE Ariz., on the Colorado River. The key unit of the U.S. Bureau of Reclamation's Colorado River storage project, it is one of the world's ...

Lin, Maya Ying

(Encyclopedia)Lin, Maya Ying mīˈə [key], 1959–, American architect and sculptor, b. Athens, Ohio. Lin's work is known for its visual poetry and sensitive mingling of highly abstract form with meaning. From an ...

Kingsolver, Barbara

(Encyclopedia)Kingsolver, Barbara, 1955–, American writer, b. Annapolis, Md., B.S. DePauw Univ., 1977, M.S. Univ. of Arizona, 1981. She studied biology and ecology and was a science writer before completing The B...

Le Clézio, Jean-Marie Gustave

(Encyclopedia)Le Clézio, Jean-Marie Gustave, 1940–, French novelist, b. Nice, grad. Univ. of Nice (L. ès L., 1963), Univ. of Aix-en-Provence (M.A., 1964), Univ. of Perpignan (D. ès L., 1983). He spent much of ...

biology

(Encyclopedia)biology, the science that deals with living things. It is broadly divided into zoology, the study of animal life, and botany, the study of plant life. Subdivisions of each of these sciences include cy...

hyena

(Encyclopedia)hyena hī-ēˈnə [key], carnivorous, chiefly nocturnal mammal of the Old World family Hyaenidae. Although doglike in appearance, hyenas are more closely related to civets (family Viverridae) and cats...

zoology

(Encyclopedia)zoology, branch of biology concerned with the study of animal life. From earliest times animals have been vitally important to man; cave art demonstrates the practical and mystical significance animal...

grass

(Encyclopedia)CE5 Edible grasses grass, any plant of the family Poaceae (formerly Gramineae), an important and widely distributed group of vascular plants, having an extraordinary range of adaptation. Numbering...

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