A bicycle, also called a bike or cycle, is a humanpowered or motorpowered, pedaldriven, singletrack vehicle, having two wheels attached to a frame, one behind the other.A bicycle rider is called a cyclist, or bicyclist.. Bicycles were introduced in the 19th century in Europe, and by the early 21st century, more than 1 billion were in existence at a given time.
Download Image:
clickdownload
and right mouse click and Save image As...on new page
