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Terms for subject Environment (5878 entries)
تآشير chelicerate (A subphylum of the phylum Artrophoda; chelicerae are characteristically modified as pincers)
تآكل corrosion (A process in which a solid, especially a metal, is eaten away and changed by a chemical action)
تآكل erosion (The general process or the group of processes whereby the materials of Earth's crust are loosened , dissolved, or worn away and simultaneously moved from one place to another, by natural agencies, which include weathering, solution, corrosion, and transportation, but usually exclude mass wasting)
تآكل الأوزون في طبقات الجو العليا stratospheric ozone depletion (Damage of the ozone shield by chemicals released on Earth. The main chemicals that are depleting stratospheric ozone are chlorofluorocarbons (CFCs), which are used in refrigerators, aerosols, and as cleaners in many industries, and halons which are used in fire extinguishers. The damage is caused when these chemicals release highly reactive forms of chlorine and bromine)
تآكل التربة soil erosion (Detachment and movement of topsoil or soil material from the upper part of the profile, by the action of wind or running water, especially as a result of changes brought about by human activity, such as unsuitable or mismanaged agriculture)
تآكل السواحل coastal erosion (The gradual wearing away of material from a coast by the action of sea water)
تآكل بحري beach erosion
تآكل بفعل الرياح wind erosion (The breakdown of solid rock into smaller particles and its removal by wind. It may occur on any soil whose surface is dry, unprotected by vegetation (to bind it at root level and shelter the surface) and consists of light particles. The mechanisms include straightforward picking up of dust and soil particles by the airflow and the dislodging or abrasion of surface material by the impact of particles already airborne)
تآكل بفعل المياه water erosion (The breakdown of solid rock into smaller particles and its removal by water. As weathering, erosion is a natural geological process, but more rapid soil erosion results from poor land-use practices, leading to the loss of fertile topsoil and to the silting of dams, lakes, rivers and harbours. There are three classes of erosion by water. 1. Splash erosion occurs when raindrops strike bare soil, causing it to splash, as mud, to flow into spaces in the soil and to turn the upper layer of soil into a structureless, compacted mass that dries with a hard, largely impermeable crust. 2. Surface flow occurs when soil is removed with surface run-off during heavy rain. 3. Channelized flow occurs when a flowing mixture of water and soil cuts a channel, which is then deepened by further scouring. A minor erosion channel is called a rill, a larger channel a gully)
تآكل كيميائي chemical corrosivity (The tendency of a metal to wear away another by chemical attack)
تأثير الاندماج combination effect (A combined effect of two or more substances or organisms which is greater than the sum of the individual effect of each)
تأثير الضوضاء noise immission (Immission in the environment of acoustic vibrations that negatively affect human beings, animals, plants or other objects)
تأثير المواد السامة المضاد antagonistic effect of toxic substances
تأثير - أثر بيولوجي biological effect (Biological effects include allergic reactions, respiratory disorders, hypersensitivity diseases and infectious diseases and can be caused by a variety of contaminants and pollutants)
تأثير كيميائي ضوئي photochemical effect (The result or consequence of a chemical reaction caused by light or ultraviolet radiation)
تأثير مستوى التوظيف employment level effect (The result or impact of a specific policy, action or event upon the number of working-age persons holding jobs in a specific region, nation or sector of the economy)
تأثيرات الحريق fire effects
تأجير عقار estate rental (The service provided by an owner agreeing to grant the temporary possession of specific housing in return for the payment of rent from the tenant)
تأريخ dating (Any of several techniques such as radioactive dating, dendrochronology, or varve dating, for establishing the age of rocks, palaeontological or archaeological specimens, etc.)
تأمين insurance (The act, system, or business of providing financial protection contingencies, such as death, loss or damage and involving payment of regular premiums in return for a policy guaranteeing such protection)