Question: Hasken rana yana da wani ɓangare a cikin zagayawar ruwa ta
Options:
yana shafar igiyoyin teku.
yana taimakawa wajen tsotse ruwan ƙarƙashin kasa.
ƙayyade nau'in girgijen da ya haɗu
canza ruwa zuwa tiriri 
Answer: D