Yes, but with an engine...
no there not dirt bike is better
if you dont like dirt bikes "il throw a granade at you ohh ohh"
yes, dirt bikes are motorized
NO dirt bikes are either air cooled (you will mainly find this on Chinese bikes) or they are cooled by coolant from a radiater, much like the one in your car.
weird
dirt bikes
Everybody that races dirt bikes "started" racing dirt bikes at some point.
dirt bikes in the past had less gears and power then dirt bikes have today
The two main types of dirt bikes are motocross and trail bikes. Yamaha, Kawasaki, and Honda all make these types of dirt bikes.
no dirt bikes arn't illegal
dirt-biking is for dirt-bikes it can be either stunt or mud riding
you can get a 2002 for like $2000