A) 1990 B) 2000 C) 1975 D) 1986
A) Methane B) Hydrogen sulfide C) Carbon dioxide D) Nitrogen
A) Glacial lake B) Reservoir C) Artificial lake D) Crater lake
A) Cameroon B) Ghana C) Nigeria D) Uganda
A) Limnic eruption B) Glacial melt C) Fluvial flood D) Tsunami
A) Evacuated nearby villages B) Pumped in oxygen C) Installed degassing pipes D) Built a dam
A) Approximately 100 meters B) 10 meters C) 50 meters D) 200 meters
A) Water temperature B) Soil fertility C) Air quality D) Wildlife diversity |