<prompt> Fingqa isihloko: Ngokwesifundo esisha, amabhere asezindaweni ezibandayo abhekana nezinguquko ezingase zilimaze ubuchopho bawo ngenxa yokwanda kokungcola e-Arctic. Ososayensi baye bathola ukuthi izinqubo ezibalulekile zobuchopho bamabhere asezindaweni ezibandayo ziphazanyiswa amakhemikhali enziwe umuntu njengama-stain repellent nemithi yokuvikela amanzi. Bathi lokhu kungabangela izinguquko ekuziphatheni kwebhere elimhlophe nasekulinganiseni ama-hormone okungase ekugcineni kuthinte ikhono lalo lokusinda. Njengesilwane esidla ezinye, izinto ezingcolisayo ekudleni kwamabhere asezindaweni ezibandayo, njengalesi esingenhla, zingase ziqongelelwe ezicutshini zawo. Lezi zinto ezingcolisayo, ezaziwa ngokuthi ama-perfluoroalkly compounds, ziqongelela ezindaweni ezithile zobuchopho bamabhere asezindaweni ezibandayo ngemva kweminyaka edla ukudla okungcolile. La makhemikhali angena olwandle ngokuphuma emgodini wokulahla udoti futhi kancane kancane angene emaketangeni okudla, akha izilwane ezinkulu ezidla ezinye. Muva nje iqembu lososayensi libike ukuthi ukungcola kwamakhemikhali okunqwabelene e-Arctic kungase kunciphise ubukhulu bamathambo asezinhlathini zamabhere asezindaweni ezibandayo. Abacwaningi base - Aarhus University eDenmark bathola ukuthi ama - polychlorinated biphenyls ama - PCB ahlobene ne - penile bone engashisi kangako. Ngaphambili babonise ukuthi amabhere anamazinga aphakeme ezinto ezingcolisayo ezibizwa ngokuthi ama-organohalogen, ahlanganisa ama-PCB, emizimbeni yawo, anamathambo nezinduna ezincane kunezinga elijwayelekile. Ama-organohalogen aqukethe okungenani i-halogen eyodwa efana ne-fluorine noma i-chlorine, futhi asetshenziswa njengama-solvents nemithi yokubulala izinambuzane, kanye nasekwenzeni udayi nemithi. Ama-PCB ayesetshenziselwa ukwenza upende nezinto zenjoloba ngawo-1930, kodwa avinjelwa ngo-2001 ngemva kokuba ososayensi bethole ukuthi angabangela umdlavuza. Abacwaningi baxwayisa ngokuthi ukuba khona kwamakhemikhali anjalo, athambekele ekuqongeleleni ngokuhamba kwesikhathi emizimbeni yezilwane ezidla ezinye ezidliwayo, kungase kube nemiphumela eyinhlekelele ekuzaleni kwamabhere asezindaweni ezibandayo. Njengoba amabhere asezindaweni ezibandayo eyizilwane ezidla ezinye kakhulu e-Arctic, akha amazinga aphakeme kakhulu ala makhemikhali. Abacwaningi bathola ukuthi izingxenye zobuchopho bamabhere asezindaweni lapho izinga...  <response>: Abacwaningi baseNyuvesi yaseCopenhagen bacwaninga izicubu zobuchopho bebhere lasezindaweni ezibandayo. Bathola izinto ezingcolisa umoya ezibizwa ngokuthi ama-perfluoroalkyl ezinqwabelene ebuchosheni bezilwane. Amazinga aphakeme ayehlotshaniswa namazinga aphansi ama-neurotransmitters abalulekile. Lezi zingase zithinte ukuziphatha namazinga ama-hormone kumabhere asezindaweni ezibandayo. 