Football is a sport that is dangerous because it may cause clashes between two-player and can cause serious injuries, such as broken legs, broken head. Ankle, dropped, etc.
Football is a dangerous sport, because this might cause a clash between the two players and can cause severe injuries such as a broken leg, broken ankle heads off and so on.
Football is a sport that danger because of potential clashes between the two players, and may cause severe injuries such as broken head. Ankle dislocation, etc.!