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transplanting
(Encyclopedia)transplanting, in horticulture, the process of removing a plant from the place where it has been growing and replanting it in another. The major requirement in transplanting (especially of larger plan...ventilation
(Encyclopedia)ventilation, process of supplying fresh air to an enclosed space and removing from it air contaminated by odors, gases, or smoke. Proper ventilation requires also that there be a movement or circulati...alabaster
(Encyclopedia)alabaster, fine-grained, massive, translucent variety of gypsum, a hydrous calcium sulfate. It is pure white or streaked with reddish brown. Alabaster, like all other forms of gypsum, forms by the eva...fog
(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...dew
(Encyclopedia)dew, thin film of water that has condensed on the surface of objects near the ground. Dew forms when radiational cooling of these objects during the nighttime hours also cools the shallow layer of ove...chaparral
(Encyclopedia)chaparral chăpərălˈ [key], type of plant community in which shrubs are dominant. It occurs usually in regions having from 10 to 20 in. (25–50 cm) of rainfall annually and with a Mediterranean-ty...hydrology
(Encyclopedia)hydrology, study of water and its properties, including its distribution and movement in and through the land areas of the earth. The hydrologic cycle consists of the passage of water from the oceans ...honey
(Encyclopedia)honey, sweet, viscid fluid produced by honeybees from the nectar of flowers. The nectar is taken from the flower by the worker bee and is carried in the honey sac back to the hive. It is transformed i...liquid air
(Encyclopedia)liquid air, ordinary air that has been liquefied by compression and cooling to extremely low temperatures (see liquefaction). Its commercial preparation involves purification by washing to remove solu...tundra
(Encyclopedia)tundra tŭnˈdrə [key], treeless plains of N North America and N Eurasia, lying principally along the Arctic Circle, on the coasts and islands of the Arctic Ocean, and to the north of the coniferous ...Browse by Subject
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