Why is animal husbandry, which is important for human life, is considered as a negative factor affecting natural biogeocenoses?

Livestock farms produce a huge amount of organic waste and many livestock enterprises discharge these effluents either into the water or in the adjacent territory, which subsequently causes eutrophication of both surface water in the first case and groundwater in the second. Also, ungulates need to graze on flat meadows, which will later be severely disturbed due to the high level of trampling.

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