A commercial driver's license (CDL) is a driver's license required in the United States to operate any type of vehicle. 1  weighing 26,001 pounds or greater, or any combination of vehicles weighing 26,001 pounds or greater when towing a trailer weighing more than 10,000 pounds.
The cause of drug abuse is not fully known but likely include genetic predisposition, co-occurring conditions and environmental circumstances. Drug use and experimentation is common in pre-adolescents and adolescents, but only a small percentage of those users will go on to abuse drugs.hile many people use drugs, only a small percentage abuse drugs, but it has been noted drug abuse often runs in families, suggesting genetics is one of the causes of drug abuse.
Main Causes. The two main causes of child abuse are domestic violence and substance abuse. Children who live in households where violence is present usually end up becoming victims themselves. PCANY reports that 50 to 70 percent of men who abuse their female partners also abuse their children. Substance abuse is another leading cause of child abuse. According to PCANY, drugs or alcohol contribute to 70 percent of cases of child maltreatment, meaning physical abuse or neglect. Kids under 5 are the most susceptible to abuse or neglect by a substance-abusing parent and represent the fastest growing population of foster children. Physical Effects. The most obvious effect of child ...