This video is for Edexcel IGCSE Biology 91 but is relevant for many GCSE Biology courses. It covers the following objectives from the syllabus

4.11B Describe the stages in the nitrogen cycle, including the roles of nitrogen fixing bacteria, decomposers, nitrifying bacteria and denitrifying bacteria (specific names of bacteria are not required).

You can download a teaching PowerPoint for this topic here: https://www.mrexham.com/4ecologyand...

Or one for the whole course here: https://www.mrexham.com/store/p118/Ul...