Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A lokacin yakin basasa na Amurka, yayin da zirga-zirgar tarho ya karu, halin da ake ciki na Grove cell don fitar da hayaki mai guba nitrogen dioxide (NO2) ya zama mai haɗari ga lafiyar jiki, kuma yayin da telegraphs ya zama mafi rikitarwa, buƙatar ƙarfin lantarki na yau da kullum ya zama mahimmanci. Kwayar Grove ta iyakance a wannan batun, saboda yayin da aka fitar da kwayar, ƙarfin lantarki ya ragu. A ƙarshe, an maye gurbin ƙwayoyin Grove a cikin amfani da ƙwayoyin Daniell.  Tambaya: Wace irin tantanin lantarki ne ya maye gurbin tantanin farko na lantarki?
Kwayoyin Daniell