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<p><a href="page.php?w=Image%3ANitrogen_Cycle.svg">thumb</a><b>Human impact on the nitrogen cycle</b> is diverse. Agricultural and industrial <a href="page.php?w=nitrogen">nitrogen</a> (N) inputs to the environment currently exceed inputs from natural <a href="page.php?w=Nitrogen_fixation">N fixation</a>. This is largely attributed to the widespread use of synthetic fertilizers produced via the <a href="page.php?w=Haber_process">Haber-Bosch</a> process, and the expansion of fossil fuel combustion following the <a href="page.php?w=Industrial_Revolution">Industrial Revolution</a>.</p><p>
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