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	Human Impacts on the Nitrogen Cycle (Mrs. Lynch) View
	Nitrogen cycle human impact (Jennifer Chumley) View
	The Nitrogen Cycle! (BioMan Biology) View
	How humans disrupted a cycle essential to all life (Vox) View
	Understanding Our Soil: The Nitrogen Cycle, Fixers, and Fertilizer (Jimi Sol) View
	Carbon and Nitrogen Cycles (Amoeba Sisters) View
	Nitrogen HUMAN IMPACT (Jennifer Chumley) View
	Ecology Review: Food Chains u0026 Webs, Relationships, Nitrogen u0026 Carbon Cycles, Effects on Biodiversity (Amoeba Sisters) View
	The Nitrogen Cycle (MAD GARDEN Science) View
	The Circle of Nitrogen: Feeding the Earth (Witty Science Whiz) View