Quick Answer. Color intensity refers to how bright or dull a color looks, according to Art Studio Chalkboard. This term is most often used in art and photography but can also have other applications. Bright colors are considered more pure, while dull colors can appear indistinguishable or gray.
A drug is a chemical substance that can change how your body and mind work. Drugs of abuse are substances that people use to get high and change how they feel. They may be illegal drugs like marijuana, cocaine, or heroin. Or they may be legal for adults only, like alcohol and tobacco.
A drug is any substance that alters the central nervous system, brain chemistry or bodily functions. There is no single definition since there are different meanings of the word drug, with regard to medicine, government and street usage. Dictionary.com defines a drug as a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being.. Medicinal drugs may be prescribed by a doctor for a limited time frame or for use on a regular basis for chronic condition. Recreational drugs or street drugs are drugs that target the central nervous system and brain chemistry. They are used specifically to alter perception, mood and behavior. Many recreational drugs lead to abuse and dependency.