Illegal drug use often leads to more illegal behavior.

drug abuse can often lead to suicide because

D is the correct answer. Many drugs can target the parts of the brain that influence decision making and make the user's judgement and decision making less good. They can also make a negative situation seem worse than it is already. Additionally, withdrawal symptoms are emotionally and physically taxing so they can become overwhelming.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.