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| Terms for subject Environment (5949 entries) |
| biofiltration (The distribution of settled sewage on a bed of inert granular material through which it is allowed to percolate. In doing so, the effluent is aerated thus allowing aerobic bacteria and fungi to reduce its biochemical oxygen demand) | bioiragazketa | |
| biofuel (A gaseous, liquid, or solid fuel that contains an energy content derived from a biological source. The organic matter that makes up living organisms provides a potential source of trapped energy that is beginning to be exploited to supply the ever-increasing energy demand around the world. An example of a biofuel is rapeseed oil, which can be used in place of diesel fuel in modified engines. The methyl ester of this oil, rapeseed methyl ester (RME), can be used in unmodified diesel engines and is sometimes known as biodiesel. Other biofuels include biogas and gasohol) | bioerregai | |
| biogas (Gas, rich in methane, which is produced by the fermentation of animal dung, human sewage or crop residues in an air-tight container. It is used as a fuel, to heat stoves, lamps, run small machines and to generate electricity. The residues of biogas production are used as a low-grade organic fertilizer. Biogas fuels do not usually cause any pollution to the atmosphere, and because they come from renewable energy resources they have great potential for future use) | biogas | |
| biogeochemical cycle (Movement of chemical elements in a circular pathway, from organisms to physical environment, back to organisms. The process is termed a nutrient cycle if the elements concerned are trace elements, which are essential to life. A biogeochemical cycle occurs when vegetation decomposes and minerals are incorporated naturally in the humus for future plant growth) | ziklo biogeokimiko | |
| biogeochemistry | biogeokimika | |
| biogeographical region (Area of the Earth's surface defined by the species of fauna and flora it contains) | eskualde biogeografiko | |
| biogeography (The science concerned with the geographical distribution of animal and plant life) | biogeografia | |
| biological activity | aktibitate biologiko | |
| biological analysis (The analysis of a substance in order to ascertain its influence on living organisms) | azterketa biologiko | |
| biological attribute (Properties or features belonging to living organisms) | ezaugarri biologiko | |
| biological contamination (The presence in the environment of living organisms or agents derived by viruses, bacteria, fungi, and mammal and bird antigens that can cause many health effects) | poluzio biologiko | |
| biological cycle (A series of transformations or biological events which follow one after the other one, reaching at the end of the cycle the initial conditions, as in the life cycle of many animal and plant organisms) | ziklo biologiko | |
| biological development (The action of growing of living organisms) | garapen biologiko | |
| 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) | ondorio biologiko | |
| biological effect of pollution (Effects of pollution on living systems) | kutsaduraren efektu biologiko | |
| biological effect of pollution (Effects of pollution on living systems) | poluzioaren efektu biologiko | |
| biological engineering (The application of engineering principles and techniques to living organisms. It is largely concerned with the design of replacement body parts, such as limbs, heart valves, etc.) | ingeniaritza biologiko | |
| biological heritage (The inheritance and preservation of the earth's or a particular region's balanced, integrated functionality as a natural habitat, with special concern for the water resources necessary to maintain the ecosystem) | ondare biologiko | |
| biological indicator (A species or organism that is used to grade environmental quality or change) | adierazle ekologiko | |
| biological indicator (A species or organism that is used to grade environmental quality or change) | adierazle biologiko |