Two systems are said to be in chemical equilibrium with each other when their chemical potentials are same. 3) Thermal equilibrium: When the system is in mechanical and chemical equilibrium and there is no spontaneous change in any of its properties, the system is said to be in thermal equilibrium.
While scientists have known for some time that genetics play a role in alcoholism and other addictions, they also understand the tendency to be dependent on alcohol is more complicated than the simple presence or absence of any one gene.
It is important to note then that whether a person decides to use alcohol or drugs is a choice, influenced by their environmentâpeers, family, and availability. But, once a person uses alcohol or drugs, the risk of developing alcoholism or drug dependence is largely influenced by genetics.Alcoholism and drug dependence are not moral issues, are not a matter of choice or a lack of willpower.hen an animal eats a certain food that it likes, there is an advantage to associating pleasure with that food so that the animal will look for that food in the future. In other words, the genetic potential for addiction is hardwired into our brain. But some people are better at knowing when enough is enough.