Nowadays there are many means of transportation such as buses,bikes ,cars ,trains or planes.But they are different in many ways.Trains are slow but cheap and we can enjoy the beautiful scenery along the road.Planes are expensive but they are fast and it is comfortable to travel by plane.Cars waste too much fuel and it gets off waste .It is bad for our health.Bikes are tiring but it can make us healthy and it is good to our environment.