Answer:
carbon dioxide
Explanation:
In August 1986, a gigantic volume of carbon dioxide belched forth from Lake Nyos in Cameroon and swept down the adjacent valleys asphyxiating 1,700 people. Lake Nyos is a lake in the Northwest Region of Cameroon. In 1986, Lake Nyos suddenly emitted a large cloud of [tex]CO_2[/tex] due to a landslide. As a result, 3,500 livestock in nearby towns and villages.