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| Terms for subject Environment (5878 entries) |
| aquatic plant (Plants adapted for a partially or completely submerged life) | نبات مائي | |
| aquatic recreational amenity (No definition needed) | مرافق ترفيه مائية | |
| aquatic weed | عشب (ب; مائي) | |
| aqueduct (A channel for supplying water; often underground, but treated architecturally on high arches when crossing valleys or low ground) | قناة مائية | |
| aquifer (Layers of rock, sand or gravel that can absorb water and allow it to flow. An aquifer acts as a groundwater reservoir when the underlying rock is impermeable. This may be tapped by wells for domestic, agricultural or industrial use. A serious environmental problem arises when the aquifer is contaminated by the seepage of sewage or toxins from waste dumps. If the groundwater in coastal areas is over-used salt water can seep into the aquifer) | طبقة صخرية مائية | |
| arable farming (Growing crops as opposed to dairy farming, cattle farming, etc.) | زراعة حقلية | |
| arboretum (Collection of trees from different parts of the world, grown for scientific study) | التشجير لأغراض علمية | |
| arboriculture (The planting and care of woody plants, especially trees) | زراعة الأشجار | |
| archaeological site (Any location containing significant relics and artifacts of past culture) | موقع أثري | |
| archaeology (The scientific study of the material remains of the cultures of historical or prehistorical peoples) | علم الآثار | |
| archipelago (A chain of many islands including the waters that surround them) | أرخبيل | |
| architecture (The art and science of designing and building structures, or large groups of structures, in keeping with aesthetic and functional criteria) | عمارة | |
| Arctic ecosystem | النظام البيئي لأركتيك | |
| Arctic Ocean (The smallest and most poorly studied of the oceans on earth. It covers an area of 14 million square km that is divided by three submarine ridges, i.e. the Alpha Ridge, the Lomonosov Ridge, and an extension of the mid-Atlantic ridge. It is also nearly landlocked, covered year-round by pack ice, and the third of its area is continental shelf) | المحيط المتجمد الشمالي | |
| Arctic region (The northernmost area of the earth, centered on the North Pole, that includes the Arctic Ocean, the northern reaches of Canada, Alaska, Russia, Norway and most of Greenland, Iceland and Svalbard) | منطقة القطب الشمالي | |
| area of potential pollution (Area which is supposedly causing dangers to human health and environment) | منطقة تلوث محتمل | |
| area under stress (Areas that are flooded by rising number of tourists or other kinds of pressure and suffer from insufficient or inappropriate planning and management. Damage frequently arises from a lack of understanding or interest of the value of such sites) | منطقة واقعة تحت ضغط | |
| arid land (Lands characterized by low annual rainfall of less than 250 mm, by evaporation exceeding precipitation and a sparse vegetation) | أرض قاحلة | |
| arid land ecosystem (The interacting system of a biological community and its non-living environmental surroundings in a climatic region where the annual precipitation averages less than 10 inches per year) | النظام الإيكولوجي للأراضي القاحلة | |
| armament (The weapons, ammunition and equipment, or the total force held by a military unit or state) | التسليح |