nitrogen cycle

nitrogen cycle   Dan product life cycle

The nitrogen cycle is a biogeochemical cycle in which nitrogen is transformed into numerous chemical forms as it moves through the atmospheric, land, and sea

A CONTINUAL PROCESS · Biological nitrogen fixation is the first step in the nitrogen cycle, occurring when atmospheric nitrogen is 'fixed' or converted into The global nitrogen cycle is central to the biogeochemistry of the Earth, with large natural flows of nitrogen from the atmosphere into

มินามิ ฮามาเบะ  151 4 Japan's automobile 'nitrogen oxides law': an example of direct environmental regulation Role of Organisms in Nitrogen Cycle · Nitrogen-fixing bacteria, which convert atmospheric nitrogen to nitrates · Bacteria of decay, which convert decaying