Scientific Concepts


nitrogen nitrogen acquisition nitrogen addition nitrogen adsorption nitrogen allocation nitrogen application nitrogen assimilation nitrogen atmosphere nitrogen atoms nitrogen availability nitrogen balance	nitrogen base nitrogen bond nitrogen budget nitrogen catabolite repression nitrogen compounds nitrogen concentration nitrogen content nitrogen control nitrogen cycle nitrogen cycling nitrogen decreased nitrogen deficiency	nitrogen deposition nitrogen dioxide nitrogen donor atoms nitrogen donors nitrogen doping nitrogen dynamics nitrogen enrichment nitrogen environment nitrogen excretion nitrogen fertilization nitrogen fertilizer nitrogen fixation	nitrogen fixation rates nitrogen flow nitrogen forms nitrogen fractions nitrogen gas nitrogen heterocycles nitrogen incorporation nitrogen input nitrogen intake nitrogen intermediates nitrogen inversion nitrogen isotope analyses	nitrogen isotope composition nitrogen isotope ratios nitrogen isotopes nitrogen levels