The System Responsible for Defense Against Disease and Harmful Substances

question 16

Multiple Choice

The system responsible for defense against disease and harmful substances is the ____.

• A) circulatory system
• B) endocrine system
• C) immune system
• D) excretory system
• E) skeletal system

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Definitions:

Scarcity

A basic issue in economics where human desires appear unlimited, but the world has finite resources.

Price of Contact Lenses

The cost at which contact lenses are sold, determined by factors like brand, technology, supply, and demand.

Supply of Contact Lenses

The total amount of contact lenses that manufacturers are willing and able to sell at a given price level.

Law of Demand

The principle that, all else being equal, as the price of a good or service increases, consumer demand for the good or service will decrease and vice versa.