Aleksander Kowalczyk
Aleksander Kowalczyk voted up Den Den Aamir's answer

Leaded petrol is very toxic . After it's combustion takes place in vehicles,  oxides of lead ( PbO , pbO2) are released in the atmosphere . They effect brain development in children. It is fatal at high concentrations . Lead compounds also cause forest decline .

For this reason usage of unleaded petrol is encouraged in … Read more