In case of CO2 of earth's atmosphere disappears, the temperature of earth's surface would

Answer: Option B

In case of CO₂ in earth's atmosphere disappears, the temperature of earth's surface would Decrease.
Carbon dioxide traps heat in the atmosphere, a lessening of atmospheric carbon dioxide concentrations would mean that more heat could escape into space.
This would result in a net decrease in the Earth's average temperature, assuming other factors remain the same.