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| Terms for subject Environment (5878 entries) |
| mutagenicity (The property of chemical or physical agents of inducing changes in genetic material that are transmitted during cell division) | الاستطفار | |
| mutagenicity testing (Testing the property of a substance of being able to induce genetic mutation) | اختبار الاستطفار | |
| mutant (An individual bearing an allele that has undergone mutation and is expressed in the phenotype) | طافرة | |
| mutated micro-organisms release (The release of mutated micro-organisms creates the risk that they may exhibit some previously unknown pathogenicity, might take over from some naturally occurring bacteria (possibly having other positive functions which thus are lost) or pass on some unwanted trait to such indigenous bacteria. There is also concern that an uncontrolled genetic mutation could produce from such an engineered microorganism, a form with hazardous consequences for the environment) | إطلاق الكائنات العضوية المجهرية المطفرة | |
| mutation (A change in the chemical constitution of the DNA in the chromosomes of an organism: the changes are normally restricted to individual genes, but occasionally involve serious alteration to whole chromosomes. When a mutation occurs in gametes or gametocytes an inherited change may be produced in the characteristics of the organisms that develop from them. Mutation is one of the ways in which genetic variation is produced in organisms. A somatic mutation is one that occurs to a body cell, and is consequently past on to all the cells derived from it by mitosis. Natural mutations, at this stage of biological evolution, when they occur in the cells of higher animals, almost always produce deleterious characteristics. Both natural and artificial mutations can be brought about by ionizing radiation (hence the genetic and carcinogenic dangers of nuclear weapons) and by certain chemical substances called mutagens) | تطفير | |
| mutual response zone | منطقة تهديد مشتركة | |
| mutual response zone | منطقة عمليات مُنَسَّقة | |
| mutual threat zone | منطقة تهديد مشتركة | |
| mutual threat zone | منطقة عمليات مُنَسَّقة | |
| mycete (Nucleated usually filamentous, sporebearing organisms devoid of chlorophyll) | الفِطر | |
| mycology (The branch of botany concerned with the study of fungi) | علم الفطريات | |
| mycorrhiza (The symbiotic association of the root of a higher plant with a fungus. In an ectotrophic mycorrhiza (e.g., heath, pine trees) the fungal mycelium covers the outside of the roots; in an endotrophic mycorrhiza (e.g. orchids) the fungus grows inside the cells of the root cortex) | جذر الفطر | |
| myth (A traditional or legendary story, usually dealing with supernatural beings, ancestors, heroes or events, that is with or without determinable basis of fact or a natural explanation, but is used to explain some practice, rite or phenomenon of nature, or to justify the existence of a social institution) | أسطورة | |
| national accounting (Organised method of recording all business transactions in the national economy) | حسابات وطنية | |
| national boundary (The line demarcating recognized limits of established political units) | الحدود الدولية | |
| national conservation programme | برنامج حفاظ وطني | |
| national economic costs (The amount of money incurred as a result of the financial management of a nation's financial resources) | تكاليف الاقتصاد الوطني | |
| national economy (A nation's financial resources and its financial management, with a view towards its productivity) | الاقتصاد الوطني | |
| national environmental accounting (The collection and processing of financial information regarding the costs for ecological challenges or opportunities for nations or countries) | الحسابات البيئية الوطنية | |
| national fire codes | القوانين الوطنية للحرائق |