| extracció d'arena, de sorra |
sand extraction (The extraction of sand by mining for building purposes and for the extraction of heavy minerals such as rutile and zircon) |
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| extracció de gas natural |
natural gas extraction (The tapping of natural gas from wells located under the sea and in general from underground sources often in association with petroleum deposits; it is used as a fuel, having largely replaced coal-gas for this purpose, and as a source of intermediates for organic synthesis) |
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| extracció de grava |
gravel extraction (Obtaining a mixture of coarse sand and small water- worn or pounded stones, (used for paths and roads and as an aggregate) from the earth) |
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| extracció de minerals |
mineral extraction (The process of extracting metallic or nonmetallic mineral deposits from the Earth) |
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| extracció de petroli |
oil extraction (Recovery of oil by surface mining, as in tar sands or oil shales, or from tunnels in a shallow reservoir) |
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| extracció de sal de roca |
rock salt mining (Rock salt mining is an underground mining process in which the salt is physically dug out of the ground in an operation involving drilling, blasting and crushing the rock. The major percentage of this output is used for winter road maintenance) |
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| extracció de torba |
peat extraction (Peat is obtained from peat bogs by cutting it from the earth; it is then formed into briquettes, which can be used as fuel. Peat may be found in layers several metres thick. In some countries peat-fired generating stations for electricity are in use. Peat is also used as a soil conditioner) |
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| extracció granulada |
aggregate extraction (Extraction of crushed rock or gravel screened to sizes for use in road surfaces, concretes, or bituminous mixes) |
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| fabricació industrial |
industrial manufacturing (To make or process (a raw material) into a finished product, especially by means of a large-scale industrial operation) |
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| factor abiòtic |
abiotic factor (Physical, chemical and other non-living environmental factors. They are essential for living plants and animals of an ecosystem, providing the essential elements and nutrients that are necessary for growth. The abiotic elements also include the climatic and pedologic components of the ecosystem) |
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| factor antropogènic |
anthropogenic factor |
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| factor biòtic |
biotic factor (The influence upon the environment of organisms owing to the presence and activities of other organisms, as distinct from a physical, abiotic, environmental factor) |
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| factor climàtic |
climatic factor (Physical conditions that determine the climate in a given area, e.g. latitude, altitude, ocean streams, etc.) |
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| factor de bioconcentració |
bioconcentration factor (The quotient of the concentration of a chemical in aquatic organisms at a specific time or during a discrete time period of exposure, divided by the concentration in the surrounding water at the same time or during the same period) |
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| factor ecològic |
ecological factor (An environmental factor that, under some definite conditions, can exert appreciable influence on organisms or their communities, causing the increase or decrease in the number of organisms and/or changes in the communities) |
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| factor geogènic |
geogenic factor (Geogenic factors are those which originate in the soil, as opposed to those of anthropic origin (anthropogenic)) |
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| factor socioeconòmic |
socioeconomic factor (An essential element in a society's make-up, organization or behavior that combines financial dimensions with inter-personal or inter-group dynamics) |
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| factpr d'emissió |
emission factor (The relationship between the amount of pollutants produced to the amount of raw materials processed, or fuel consumed, in any polluting process) |
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| falguera |
fern (Any of a large number of vascular plants composing the division Polypodiophyta, without flowers and fruits) |
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| falta |
fault (A fracture or a zone of fractures along which there has been displacement of the sides relative to one another parallel to the fracture) |
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