Bombs are weapons that can be very destructive, and the damage that they cause can be devastating. From man's earliest moments on earth survival has been a priority, and through the centuries various bombs have been created in order to annihilate people. Today many call for all countries to lay aside their bombs and other weapons, but it does not appear that this is going to happen any time soon. Bombs can be used to disperse chemical or biological substances, as well as being explosive.