Problem: Answer these questions: How do the duration, potency and subjective effects of certain substances lend themselves to the people/cultures that surround those particular drugs? Is "homeostasis" the same for every individual; why or why not? Many of the most toxic and dangerous psychoactive substances on Earth (i.e. alcohol, DXM, prescription drugs) are either loosely scheduled or unscheduled altogether, while some substances with virtually no toxicity and/or abuse potential are in Schedule I. Why is this the case? Need Assignment Help?