Correct disfluencies in the text:
Secondly public transport is better for the environment than using cars because a bus has more space than a car and many people can go on a bus thus decreasing the amount of pollution and helping the enviromnent.
Secondly, public transport is better for the environment than using cars because a bus has more space than a car and many people can go on a bus, thus decreasing the amount of pollution and helping the environment.