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| Terms for subject Environment (21507 entries) |
| niebla y bruma | haze (Reduced visibility in the air as a result of condensed water vapour, dust, etc., in the atmosphere) | |
| nieve | snow (The most common form of frozen precipitation, usually flakes or starlike crystals, matted ice needles, or combinations, and often rime-coated) | |
| niño | infant (A young child in the first years of life) | |
| niño | child (A person below the age of puberty) | |
| níquel | nickel (A malleable ductile silvery-white metallic element that is strong and corrosion-resistant, occurring principally in pentlandite and niccolite: used in alloys, especially in toughening steel, in electroplating, and as a catalyst in organic synthesis) | |
| nitrato de peroxiacetilo | peroxyacetylnitrate (A pollutant created by the action of sunlight on hydrocarbons and nitrogen oxides in the air. An ingredient of smog) | |
| nitrato de peroxiacetilo | peroxyacetyl nitrate | |
| nitrato de peroxiacetilo | peroxyacetylnitrate | |
| nitratos | nitrate (Any salt or ester of nitric acid, such as sodium nitrate) | |
| nitratos | nitrate | |
| nitrificación | nitrification (The process by which ammonia compounds, including man-made fertilizer and the humus provided by organic matter or plant and animal origin, are converted into nitrites and then nitrates, which are then absorbed as a nutrient by crops. Excess nitrate can be leached into surface waters and groundwaters, causing pollution. Excess nitrate may also be converted by microbes back into gaseous nitrogen, which is an important greenhouse gas, and released back into the atmosphere. The ultimate source of nitrogen in the ecosystem is the molecular nitrogen in the atmosphere. To a very limited extent, some dissolves in water. However, none is found in rock) | |
| nitrificación | nitrification | |
| nitritos | nitrite (A salt or ester of nitric acid, included in compounds such as potassium nitrite, sodium nitrite and butyl nitrite) | |
| nitritos | nitrite | |
| nitroareno | nitroarene | |
| nitrocompuestos | nitro compound (Any one of a class of usually organic compounds that contain the monovalent group, -NO2 (nitro group or radical) linked to a carbon atom) | |
| nitrocompuestos | nitro compound | |
| nitrógeno | nitrogen (An essential nutrient in the food supply of plants and the diets of animals. Animals obtain it in nitrogen-containing compounds, particularly amino acids. Although the atmosphere is nearly 80% gaseous nitrogen, very few organisms have the ability to use it in this form. The higher plants normally obtain it from the soil after micro-organisms have converted the nitrogen into ammonia or nitrates, which they can then absorb) | |
| nitrógeno amoniacal | ammoniac nitrogen | |
| nitrógeno orgánico | organic nitrogen (Essential nutrient of the food supply of plants and the diets of animals. Animals obtain it in nitrogen-containing compounds, particularly aminoacids. Although the atmosphere is nearly 80% gaseous nitrogen, very few organisms have the ability to use it in this form. The higher plants normally obtain it from the soil after microorganisms have converted the nitrogen into ammonia or nitrates, which they can then absorb. This conversion of nitrogen, known as nitrogen fixation, is essential for the formation of amino acids which, in turn, are the building blocks of proteins) |