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nitrogen fixation

# Episode Title Description People Date
1 Creative Commons 16. Nitrogen fixation Hear about natures natural nitrogen fixers. Kylie Vincent 18 Oct 2012
2 Creative Commons 15. Nitrogen uptake by plants Why nitrogen is important to plants and the communities of microorganisms living in the soil. Kylie Vincent 18 Oct 2012
3 20. The gunnera The plant growing on the island in the lower garden pond. Timothy Walker 28 May 2012