Gurbacewar muhalli shine farashin da kuke biya don cin nama. Zubar da najasa, zubar da shara daga masana'antar sarrafa nama da wuraren kiwon dabbobi zuwa cikin koguna da ruwa na daya daga cikin abubuwan da ke haifar da gurbatar yanayi.
Yanzu dai ba boyayye ba ne cewa mabubbugar ruwan sha mai tsafta a wannan duniyar tamu ba wai gurbacewar muhalli ba ne, a’a, a sannu a hankali kuma suna raguwa, kuma sana’ar nama ce ta fi barnatar da ruwa.
Shahararren masanin ilimin halitta Georg Borgström ya yi jayayya da cewa Ruwan da ake samu daga gonakin dabbobi yana ƙazantar da muhalli fiye da magudanar ruwa na birni sau goma kuma fiye da ruwan sharar masana'antu sau uku.
| Pohl da Anna Ehrlich a cikin littafinsu Population, Resources and Environment sun rubuta cewa ana ɗaukar lita 60 na ruwa kawai don shuka kilogram ɗaya na alkama, kuma daga lita 1250 zuwa 3000 ana kashewa wajen samar da kilogram na nama! |
A shekara ta 1973, jaridar New York Post ta buga labarin game da mummunar sharar ruwa, albarkatun kasa mai daraja, a wata babbar gonar kiwon kaji ta Amurka. Wannan gonar kiwon kaji tana cinye mita 400.000 na ruwa a kowace rana. Wannan adadin ya isa samar da ruwa ga birni mai mutane 25.000!