Selenium is an essential micronutrient obtained from dietary sources such as cereals.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/selenium-deficiency-promoted-climate-change
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/science-daily
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nutrition
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture