What is the effect of high levels of carbon dioxide in the atmosphere?
Change the temperature.
The normal percentage of carbondioxide in atmosphere is about 0.03 per cent. Increase of carbon dioxide in the atmosphere will enhance the normal temperature of environment. It is because, it works as the green house gases.
Increase in temperature will change the climate. The mass of ice at the poles will melt. The fresh areas will submerge in water and natural ecosystem will change. Even the temperate regions of earth will further migrated to the poles.