Answer :

Final answer:

Psychoactive drugs alter consciousness and mood by affecting perceptions. They encompass a variety of substances categorized into different classes.


Explanation:

Psychoactive drugs are chemicals that change our states of consciousness, particularly our perceptions and moods. They can be found in various substances, including legal medications and illegal drugs, divided into classes like stimulants, depressants, opioids, and hallucinogens.


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