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Figure 21-1
-Identify the structure labeled "12."
Cocaine
A powerful and addictive stimulant drug extracted from the leaves of the coca plant.
Heroin
An opioid drug made from morphine, a natural substance taken from the seed pod of various opium poppy plants, highly addictive and illegal.
Caffeine
A stimulant chemical found in coffee, tea, and various other foods and drinks that affects the central nervous system, enhancing alertness and reducing fatigue.
Tobacco
A plant product containing nicotine which can be used in various forms, including smoking and chewing, often associated with health risks.
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