1. Prepared by Bugra Nil Kaptan Biology

2. Nitrogen Nitrogen is the 7th element on the periodic table. Nitrogen is a very important element since it is essential in the production of amino acids, nucleic acids and proteins. It is the most abundant gas in the athmosphere found as N2 Not many organism can use up nitrogen directly. So it needs to be FIXED into ammonia or nitrates before starting to move through the ecosystem.

4. TRUE or FALSE? Not many organism can use up nitrogen directly. So it needs to be FIXED into ammonia or nitrates before starting to move.

5. The name of the bacteria which live on the root nodules of legume plants and carry out nitrogen fixation is

6. There are some other methods for the production of nitrogen compounds but the one which accounts the most is All of above Manufacture of fertilizers Emission from combustion engines Nitrogen burning in lightning NITROGEN FIXATION

7. Explaining the Nitrogen Cycle

9. Human effect on Nitrogen Cycle Green house warming Thinner ozone layer Formation of smog Acid Rain Acidified Soil More tree deaths Acidified lakes and Streams Eutrophication Loss of biodiversity

10. Eutrophication

12. Acid Rain

13. Mechanism of Acid Rain

14. What to do? Less Traffic Nitrogen absorbers in water NOx Emission Control

15. Prepared By Bugra Nil Kaptan