0000005946 00000 n 0000008191 00000 n endobj 0000017979 00000 n %PDF-1.5 %���� 0000004045 00000 n Catalyzed by nitrogenase " Only works anaerobically " Occurs in all ecosystems ! 0000011663 00000 n 0000004268 00000 n Klebsiella, Clostridium, Pseudomonas in soil ! nitrogen that is already in compound form. stream Nitrogen then used in amino acids, nucleic acids, and chlorophyll. 2 0 obj The Nitrogen Cycle How does the nitrogen cycle work? %PDF-1.5 startxref 3 0 obj Nitrogen Cycle—N 2 Fixation ! 0000025398 00000 n 0 0000009127 00000 n 0000025135 00000 n 0000010918 00000 n N 2 → NH 3 → NH 4 + " NH 4 + is rapidly assimilated into amino acids ! The nitrogen cycle refers to the cycle of nitrogen atoms through the living and non-living systems of Earth. 0000025227 00000 n 0000000016 00000 n �yV��V�d��{���av3M����?�NY�M�=�p(�y��! Nitrogen Cycle ��+�r���f��E�Wh=k���c�M&{r7�iݼ5���4. endobj <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 14 0 R 15 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> %%EOF xref <> 0000024695 00000 n 0000002401 00000 n It is required by organisms in the synthesis of proteins, nucleic acids, and other nitrogenous compounds. The nitrogen cycle is vital for life on Earth. 9 38 0000001450 00000 n Rhizobium within legumes ! 0000003577 00000 n Characteristics of the cycle 95 % of dissolved nitrogen is in the form of molecular nitrogen N 2 Nitrogen has 9 oxidation states from -3 to +5 +5 NO 3-, N2 O 5 +4 NO 2 +3 HONO, NO 2-, N2 O 3 +2 NO Nitrogen fertilizer is expensive and losses can be detrimental to the environment. 0000017881 00000 n �G�D� *fD�5_�K߰W����st�/� O 0000006843 00000 n endobj 0000001056 00000 n Ammonification - Decaying process (when plant or animal dies), decomposers like fungi and bacteria turn nitrogen back into ammonium so it can re -enter the nitrogen cycle. 0000005709 00000 n trailer <<7DCD5C85AC856A4E90036DAD06CAFD74>]>> $���\n7H.-C��$�8�HR������X�������g�,���B��_:4�D�fx��Prw:}e�"���cԑ�]����[C�P�B�a�6+6!7��/��I�H�g��3d�����j���U���0f�%|N�L� 46 0 obj<>stream 9 0 obj <> endobj Efficient use of N by meeting crop needs while avoiding excessive applications of N is an important goal. 0000001527 00000 n Carbon cycle and Nitrogen Cycle Notes & graphic organizers ­ Dion 2016.notebook 2 March 17, 2016 Mar 13­7:34 PM Nitrogen Cycle Explained Nitrogen cycle GO Nitrogen Cycle Answers **Chemical Fertilizers Add Nitrogen to the Soil to help plants** DenitrificationPlants can absorb both nitrats & … 0000001705 00000 n 1 0 obj <>>> The nitrogen cycle is the shift between different chemical forms of nitrogen through biologic, physical, and geologic processes on Earth. 0000005325 00000 n 0000004344 00000 n Nitrogen cannot be absorbed directly by the plants and animals until it is converted into compounds they can use. This process is called the Nitrogen Cycle. ;fFHtJOG{���89m' .� 0000001952 00000 n Nitrogen in the atmosphere, or air, is N 2. %���� #�������I���q�'�>��5�D.�L��XHl�}��2����b. 0000007822 00000 n 4 0 obj Through the cycle, atmospheric nitrogen is converted to a form which plants can incorporate into new proteins. 0000007970 00000 n Step 1-Nitrogen Fixation- Special bacteria convert the nitrogen gas (N2 ) to ammonia (NH3) which the plants can use. But aerial nitrogen, the most abundant component of air, is rather inert chemically […] 0000002872 00000 n �Ġ�Ī\>�R���pZr��uFz{��V���2۰eY"U{ت^� Atmospheric nitrogen serves as the ultimate source. 0000007700 00000 n 0000015212 00000 n 0000010015 00000 n x��Z[o��~7����ԁ���x90�NڸM�61NQ$}�%Z"�%�������rE.ŕ���rvvv.�\���u]=��]^^\�u1��S���~������sy�{1��E]���1�~sî�OO.~Lkv�xz"X�cK�R ��'1���ϧ'�#6����rz����ݰ���׫�^-����M�\&vC�.����hM����szbD�Eʔ�y�3�sɄ� ˺<=��_l�Re�JSy�6�9��+:���CL��giy2���=���h��nn߰س�d9ϓAC�=Y�'뙻�HV�4:7Q�2R�tt.�rt�D��b�DEs���]�0�HWYw'_+[g���"Fl�j�_�ܕ���#���5}{s�_��=j�����B}��ߢ���:"ʿ�ٿC�c@�+�n���J3�݅?�&u����j����%�b�|i"���o��~��KT��ޡ�߲�[�/)��g��w�����������\��X;z�}l��JRz��#��x�U�1������3��f�����9}g�/��Xű���p���#��%�W�- �@�3���lLT��yzْ]÷IZR��{�8� 0000003491 00000 n Nitrogen is an essential element for all living things. 3��H�,�3|�����`�o(��%��7WKV�K��EE������nBD���lh�_9Qס���?�^��a��jW�h��C�,�$�;[Q 0000003534 00000 n Other important states of nitrogen include Nitrates (N0 3), Nitrites (NO 2), and Ammonium (NH 4). ADVERTISEMENTS: Nitrogen being 79 per cent of the atmosphere, the atmospheric phase is predominant in the global nitrogen cycle. For nitrogen to be used by different life forms on Earth, it must be “fixed” or changed into different states. 0000001314 00000 n <> 0000003457 00000 n 0000003816 00000 n 0000024934 00000 n This fact sheet provides a brief overview of the important components of the N cycle to aid in reaching that goal. 0000014452 00000 n

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