1. A<span>ccording to the national clearing house of alcohol and drug information (NCADI), most children under the age of 21, </span>who do not participate in drug and alcohol abuse, is virtually certain to never do so.<span>
2. T</span>he average age when youth first try alcohol is 11 years for boys and 13 <span>years for girls. The average age at which Americans begin drinking regularly in 15.9 years old.
3. Nicotine is the addictive chemical found in tobacco. </span>
Answer:
THC’s chemical structure is similar to the brain chemical anandamide. Similarity in structure allows the body to recognize THC and to alter normal brain communication.
Answer:
Intensity
Explanation:
Each time something becomes more difficult the intensity is increasing.
