How alcohol can cause teenager brain and problems? Explain

Alcohol decreases teens' ability to pay attention. Teens who have experienced alcohol withdrawal tend to have difficulties with memory. The teenage brain exposed to alcohol is at risk for being smaller in certain parts. In contrast to adults, teens tend to abuse alcohol with other substances, usually marijuana. Teens who drink heavily tend to complete fewer years of education compared to teens who do not.The younger a person is when they begin drinking, the more likely they are to develop a problem with alcohol.
Each year, almost 2,000 people under the age of 21 die in car crashes in which underage drinking is involved. Alcohol is involved in nearly half of all violent deaths involving youth.