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Dung and urine can harm water quality when livestock get near streams. Modern farming has greatly reduced such access, compared with 20 years ago.
Te whakamahi i tēnei tūemi
Reference: PICT-000051
Permission of the Alexander Turnbull Library, National Library of New Zealand, Te Puna Mātauranga o Aotearoa, must be obtained before any re-use of this image.