Nitrogen Sources and Cycling in the Ecosystem and its Role in Air, Water and Soil Pollution: A Critical Review

Ghaly AE^* and Ramakrishnan VV

Department of Process Engineering and Applied Sciences, Dalhousie University, Halifax, Nova Scotia, Canada

^*Corresponding Author: Ghaly AE, Department of Process Engineering and Applied Sciences, Dalhousie University, Halifax, Nova Scotia, Canada, Tel: (902)494-6014 Email: