I believe it’s to bring oxygen into the body and to remove carbon dioxide from the body
It depends on the time era. In Ancient Rome, they had lack of sewers and sanitation.
Behavioral economics assumes that humans may not act rationally because of genetics, learned behavior, and rules of thumb.
Behavioral economics is basically the study of psychology as it relates to economics.
The Constitution<span> of the United States: </span>Six Basic Principles<span> of Government Popular Sovereignty Limited Government Separation of Powers Checks and Balances Judicial Review Federalism people are the source of any and all governmental power, and government can exist only with the consent of the governed</span>
