List and Briefly Describe the Four Major Categories of Psychoactive

question 90

Essay

List and briefly describe the four major categories of psychoactive drugs. What effect do they typically have on the nervous system?
Module: 5.3

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Definitions:

Break-even Chart

A graphical representation that shows when a business's costs will be exactly covered by its income.

Variable Costs

Costs that vary directly with the level of production or sales, such as materials and labor costs.

Fixed Costs

Expenses that do not vary with the level of production or sales, such as rent, salaries, and insurance.

Variable Costs

Expenses that change in proportion to the activity of a business, such as the cost of raw materials or production volume.